diff --git a/include/decl.h b/include/decl.h
index 83a435248..fc5d26704 100644
--- a/include/decl.h
+++ b/include/decl.h
@@ -176,10 +176,6 @@ E NEARDATA struct obj *uarm, *uarmc, *uarmh, *uarms, *uarmg, *uarmf,
 E NEARDATA struct obj *uchain; /* defined only when punished */
 E NEARDATA struct obj *uball;
 
-E NEARDATA struct obj zeroobj; /* for init; &zeroobj used as special value */
-
-E NEARDATA anything zeroany;   /* init'd and defined in decl.c */
-
 #include "you.h"
 E NEARDATA struct you u;
 E NEARDATA time_t ubirthday;
@@ -190,19 +186,20 @@ E NEARDATA struct u_realtime urealtime;
 #include "pm.h"
 #endif
 
-E NEARDATA struct monst zeromonst; /* for init of new or temp monsters */
-
 struct mvitals {
     uchar born;
     uchar died;
     uchar mvflags;
 };
 
-E NEARDATA struct c_color_names {
+struct c_color_names {
     const char *const c_black, *const c_amber, *const c_golden,
         *const c_light_blue, *const c_red, *const c_green, *const c_silver,
         *const c_blue, *const c_purple, *const c_white, *const c_orange;
-} c_color_names;
+};
+
+E NEARDATA const struct c_color_names c_color_names;
+
 #define NH_BLACK c_color_names.c_black
 #define NH_AMBER c_color_names.c_amber
 #define NH_GOLDEN c_color_names.c_golden
@@ -218,12 +215,15 @@ E NEARDATA struct c_color_names {
 /* The names of the colors used for gems, etc. */
 E const char *c_obj_colors[];
 
-E struct c_common_strings {
+struct c_common_strings {
     const char *const c_nothing_happens, *const c_thats_enough_tries,
         *const c_silly_thing_to, *const c_shudder_for_moment,
         *const c_something, *const c_Something, *const c_You_can_move_again,
         *const c_Never_mind, *c_vision_clears, *const c_the_your[2];
-} c_common_strings;
+};
+
+E const struct c_common_strings c_common_strings;
+
 #define nothing_happens c_common_strings.c_nothing_happens
 #define thats_enough_tries c_common_strings.c_thats_enough_tries
 #define silly_thing_to c_common_strings.c_silly_thing_to
@@ -271,10 +271,10 @@ E struct tc_gbl_data {   /* also declared in tcap.h */
     char *tc_AS, *tc_AE; /* graphics start and end (tty font swapping) */
     int tc_LI, tc_CO;    /* lines and columns */
 } tc_gbl_data;
-#define AS tc_gbl_data.tc_AS
-#define AE tc_gbl_data.tc_AE
-#define LI tc_gbl_data.tc_LI
-#define CO tc_gbl_data.tc_CO
+#define AS g.tc_gbl_data.tc_AS
+#define AE g.tc_gbl_data.tc_AE
+#define LI g.tc_gbl_data.tc_LI
+#define CO g.tc_gbl_data.tc_CO
 #endif
 
 /* xxxexplain[] is in drawing.c */
@@ -308,9 +308,8 @@ E const char *const monexplain[], invisexplain[], *const oclass_names[];
 #define PREFIXES_IN_USE
 #endif
 
-E char *fqn_prefix[PREFIX_COUNT];
 #ifdef PREFIXES_IN_USE
-E char *fqn_prefix_names[PREFIX_COUNT];
+E const char *fqn_prefix_names[PREFIX_COUNT];
 #endif
 
 E NEARDATA struct savefile_info sfcap, sfrestinfo, sfsaveinfo;
@@ -699,7 +698,12 @@ struct instance_globals {
     struct monst youmonst;
     struct obj *invent;
     struct context_info context;
-
+    char *fqn_prefix[PREFIX_COUNT];
+    /* Windowing stuff that's really tty oriented, but present for all ports */
+    struct tc_gbl_data tc_gbl_data; /* AS,AE, LI,CO */     
+    struct obj zeroobj; /* used to zero out a struct obj */
+    struct monst zeromonst;  /* used to zero out a struct monst */
+    anything zeroany; /* used to zero out union any */
 
     /* dig.c */
 
diff --git a/src/apply.c b/src/apply.c
index 0b2664c0a..c66eadde2 100644
--- a/src/apply.c
+++ b/src/apply.c
@@ -2287,7 +2287,7 @@ struct obj *obj;
             return;
         consume_obj_charge(obj, TRUE);
 
-        if (otmp != &zeroobj) {
+        if (otmp != &g.zeroobj) {
             You("cover %s with a thick layer of grease.", yname(otmp));
             otmp->greased = 1;
             if (obj->cursed && !nohands(g.youmonst.data)) {
@@ -3148,7 +3148,7 @@ struct obj *obj;
         char buf[BUFSZ];
         menu_item *selected;
 
-        any = zeroany; /* set all bits to zero */
+        any = g.zeroany; /* set all bits to zero */
         any.a_int = 1; /* use index+1 (cant use 0) as identifier */
         start_menu(tmpwin);
         any.a_int++;
diff --git a/src/artifact.c b/src/artifact.c
index dcea036d8..cf8c4651d 100644
--- a/src/artifact.c
+++ b/src/artifact.c
@@ -1437,7 +1437,7 @@ struct obj *obj;
             struct obj pseudo;
 
             pseudo =
-                zeroobj; /* neither cursed nor blessed, zero oextra too */
+                g.zeroobj; /* neither cursed nor blessed, zero oextra too */
             pseudo.otyp = SCR_TAMING;
             (void) seffects(&pseudo);
             break;
@@ -1512,7 +1512,7 @@ struct obj *obj;
             winid tmpwin = create_nhwindow(NHW_MENU);
             anything any;
 
-            any = zeroany; /* set all bits to zero */
+            any = g.zeroany; /* set all bits to zero */
             start_menu(tmpwin);
             /* use index+1 (cant use 0) as identifier */
             for (i = num_ok_dungeons = 0; i < g.n_dgns; i++) {
diff --git a/src/botl.c b/src/botl.c
index ed233f8f6..b37a6cc2a 100644
--- a/src/botl.c
+++ b/src/botl.c
@@ -925,7 +925,7 @@ init_blstats()
 #endif
 
             g.blstats[i][j] = initblstats[j];
-            g.blstats[i][j].a = zeroany;
+            g.blstats[i][j].a = g.zeroany;
             if (g.blstats[i][j].valwidth) {
                 g.blstats[i][j].val = (char *) alloc(g.blstats[i][j].valwidth);
                 g.blstats[i][j].val[0] = '\0';
@@ -1762,7 +1762,7 @@ int arrmin, arrmax;
     start_menu(tmpwin);
 
     for (i = arrmin; i < arrmax; i++) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = i + adj;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  arr[i], MENU_UNSELECTED);
@@ -2134,7 +2134,7 @@ query_conditions()
     start_menu(tmpwin);
 
     for (i = 0; i < SIZE(valid_conditions); i++) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_ulong = valid_conditions[i].bitmask;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  valid_conditions[i].id, MENU_UNSELECTED);
@@ -2695,7 +2695,7 @@ status_hilite_menu_choose_field()
             && !g.blstats[0][BL_SCORE].thresholds)
             continue;
 #endif
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = (i + 1);
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  initblstats[i].fldname, MENU_UNSELECTED);
@@ -2733,7 +2733,7 @@ int fld;
     start_menu(tmpwin);
 
     if (fld != BL_CONDITION) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_ALWAYS_HILITE;
         Sprintf(buf, "Always highlight %s", initblstats[fld].fldname);
         add_menu(tmpwin, NO_GLYPH, &any, 'a', 0, ATR_NONE,
@@ -2742,7 +2742,7 @@ int fld;
     }
 
     if (fld == BL_CONDITION) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_CONDITION;
         add_menu(tmpwin, NO_GLYPH, &any, 'b', 0, ATR_NONE,
                  "Bitmask of conditions", MENU_UNSELECTED);
@@ -2750,7 +2750,7 @@ int fld;
     }
 
     if (fld != BL_CONDITION) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_UPDOWN;
         Sprintf(buf, "%s value changes", initblstats[fld].fldname);
         add_menu(tmpwin, NO_GLYPH, &any, 'c', 0, ATR_NONE,
@@ -2760,7 +2760,7 @@ int fld;
 
     if (fld != BL_CAP && fld != BL_HUNGER
         && (at == ANY_INT || at == ANY_LONG)) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_VAL_ABSOLUTE;
         add_menu(tmpwin, NO_GLYPH, &any, 'n', 0, ATR_NONE,
                  "Number threshold", MENU_UNSELECTED);
@@ -2768,7 +2768,7 @@ int fld;
     }
 
     if (initblstats[fld].idxmax >= 0) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_VAL_PERCENTAGE;
         add_menu(tmpwin, NO_GLYPH, &any, 'p', 0, ATR_NONE,
                  "Percentage threshold", MENU_UNSELECTED);
@@ -2777,7 +2777,7 @@ int fld;
 
     if (initblstats[fld].anytype == ANY_STR
         || fld == BL_CAP || fld == BL_HUNGER) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = onlybeh = BL_TH_TEXTMATCH;
         Sprintf(buf, "%s text match", initblstats[fld].fldname);
         add_menu(tmpwin, NO_GLYPH, &any, 't', 0, ATR_NONE,
@@ -2825,7 +2825,7 @@ boolean ltok, gtok;
                     (fld == BL_AC) ? "Better (lower)" : "Less", str);
         else
             Sprintf(buf, "Value goes down");
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 10 + LT_VALUE;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  buf, MENU_UNSELECTED);
@@ -2833,7 +2833,7 @@ boolean ltok, gtok;
         if (str) {
             Sprintf(buf, "%s or %s",
                     str, (fld == BL_AC) ? "better (lower)" : "less");
-            any = zeroany;
+            any = g.zeroany;
             any.a_int = 10 + LE_VALUE;
             add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                      buf, MENU_UNSELECTED);
@@ -2844,7 +2844,7 @@ boolean ltok, gtok;
         Sprintf(buf, "Exactly %s", str);
     else
         Sprintf(buf, "Value changes");
-    any = zeroany;
+    any = g.zeroany;
     any.a_int = 10 + EQ_VALUE;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
              buf, MENU_UNSELECTED);
@@ -2853,7 +2853,7 @@ boolean ltok, gtok;
         if (str) {
             Sprintf(buf, "%s or %s",
                     str, (fld == BL_AC) ? "worse (higher)" : "more");
-            any = zeroany;
+            any = g.zeroany;
             any.a_int = 10 + GE_VALUE;
             add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                      buf, MENU_UNSELECTED);
@@ -2864,7 +2864,7 @@ boolean ltok, gtok;
                     (fld == BL_AC) ? "Worse (higher)" : "More", str);
         else
             Sprintf(buf, "Value goes up");
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 10 + GT_VALUE;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
              buf, MENU_UNSELECTED);
@@ -2996,7 +2996,7 @@ choose_value:
                      : (lt_gt_eq == EQ_VALUE) ? "="
                        : ""; /* didn't specify lt_gt_eq with number */
 
-        aval = zeroany;
+        aval = g.zeroany;
         dt = percent ? ANY_INT : initblstats[fld].anytype;
         (void) s_to_anything(&aval, numstart, dt);
 
@@ -3366,7 +3366,7 @@ int fld;
         hlstr = status_hilite_str;
         while (hlstr) {
             if (hlstr->fld == fld) {
-                any = zeroany;
+                any = g.zeroany;
                 any.a_int = hlstr->id;
                 add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                          hlstr->str, MENU_UNSELECTED);
@@ -3374,17 +3374,17 @@ int fld;
             hlstr = hlstr->next;
         }
     } else {
-        any = zeroany;
+        any = g.zeroany;
         Sprintf(buf, "No current hilites for %s", initblstats[fld].fldname);
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, buf, MENU_UNSELECTED);
     }
 
     /* separator line */
-    any = zeroany;
+    any = g.zeroany;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
 
     if (count) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = -1;
         add_menu(tmpwin, NO_GLYPH, &any, 'X', 0, ATR_NONE,
                  "Remove selected hilites", MENU_UNSELECTED);
@@ -3400,7 +3400,7 @@ int fld;
     } else
 #endif
     {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = -2;
         add_menu(tmpwin, NO_GLYPH, &any, 'Z', 0, ATR_NONE,
                  "Add a new hilite", MENU_UNSELECTED);
@@ -3496,12 +3496,12 @@ shlmenu_redo:
     status_hilite_linestr_gather();
     countall = status_hilite_linestr_countfield(BL_FLUSH);
     if (countall) {
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = -1;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  "View all hilites in config format", MENU_UNSELECTED);
 
-        any = zeroany;
+        any = g.zeroany;
         add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     }
 
@@ -3517,7 +3517,7 @@ shlmenu_redo:
         if (initblstats[i].fld == BL_SCORE && !count)
             continue;
 #endif
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = i + 1;
         Sprintf(buf, "%-18s", initblstats[i].fldname);
         if (count)
diff --git a/src/cmd.c b/src/cmd.c
index 25cab2ca5..fcaea4670 100644
--- a/src/cmd.c
+++ b/src/cmd.c
@@ -372,7 +372,7 @@ doextlist(VOID_ARGS)
 
     while (redisplay) {
         redisplay = FALSE;
-        any = zeroany;
+        any = g.zeroany;
         start_menu(menuwin);
         add_menu(menuwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  "Extended Commands List", MENU_UNSELECTED);
@@ -416,7 +416,7 @@ doextlist(VOID_ARGS)
                      : "Show all alphabetically, including debugging commands",
                      MENU_UNSELECTED);
         }
-        any = zeroany;
+        any = g.zeroany;
         add_menu(menuwin, NO_GLYPH, &any, 0, 0, ATR_NONE,
                  "", MENU_UNSELECTED);
         menushown[0] = menushown[1] = 0;
@@ -557,7 +557,7 @@ extcmd_via_menu()
     biggest = 0;
     while (!ret) {
         i = n = 0;
-        any = zeroany;
+        any = g.zeroany;
         /* populate choices */
         for (efp = extcmdlist; efp->ef_txt; efp++) {
             if ((efp->flags & CMD_NOT_AVAILABLE)
@@ -1326,7 +1326,7 @@ wiz_intrinsic(VOID_ARGS)
         const char *propname;
         menu_item *pick_list = (menu_item *) 0;
 
-        any = zeroany;
+        any = g.zeroany;
         win = create_nhwindow(NHW_MENU);
         start_menu(win);
         for (i = 0; (propname = propertynames[i].prop_name) != 0; ++i) {
@@ -1465,7 +1465,7 @@ doterrain(VOID_ARGS)
      */
     men = create_nhwindow(NHW_MENU);
     start_menu(men);
-    any = zeroany;
+    any = g.zeroany;
     any.a_int = 1;
     add_menu(men, NO_GLYPH, &any, 0, 0, ATR_NONE,
              "known map without monsters, objects, and traps",
@@ -1560,7 +1560,7 @@ const char *buf;
     if (g.en_via_menu) {
         anything any;
 
-        any = zeroany;
+        any = g.zeroany;
         add_menu(g.en_win, NO_GLYPH, &any, 0, 0, ATR_NONE, buf, FALSE);
     } else
         putstr(g.en_win, 0, buf);
@@ -2917,7 +2917,7 @@ minimal_enlightenment()
     fmtstr = iflags.menu_tab_sep ? tabbed_fmtstr : untabbed_fmtstr;
     deity_fmtstr = iflags.menu_tab_sep ? tabbed_deity_fmtstr
                                        : untabbed_deity_fmtstr;
-    any = zeroany;
+    any = g.zeroany;
     buf[0] = buf2[0] = '\0';
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
@@ -5111,7 +5111,7 @@ const char *text;
     anything any;
 
     if ((ch = cmd_from_func(func)) != '\0') {
-        any = zeroany;
+        any = g.zeroany;
         any.a_nfunc = func;
         add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, text, MENU_UNSELECTED);
     }
diff --git a/src/decl.c b/src/decl.c
index d84a60fc3..878f8da9a 100644
--- a/src/decl.c
+++ b/src/decl.c
@@ -42,27 +42,21 @@ const schar xdir[10] = { -1, -1, 0, 1, 1, 1, 0, -1, 0, 0 };
 const schar ydir[10] = { 0, -1, -1, -1, 0, 1, 1, 1, 0, 0 };
 const schar zdir[10] = { 0, 0, 0, 0, 0, 0, 0, 0, 1, -1 };
 
-NEARDATA struct flag flags = DUMMY;
+NEARDATA struct flag flags;
 #ifdef SYSFLAGS
-NEARDATA struct sysflag sysflags = DUMMY;
+NEARDATA struct sysflag sysflags;
 #endif
-NEARDATA struct instance_flags iflags = DUMMY;
-NEARDATA struct you u = DUMMY;
-NEARDATA time_t ubirthday = DUMMY;
-NEARDATA struct u_realtime urealtime = DUMMY;
+NEARDATA struct instance_flags iflags;
+NEARDATA struct you u;
+NEARDATA time_t ubirthday;
+NEARDATA struct u_realtime urealtime;
 
-NEARDATA struct obj
-    *uwep = (struct obj *) 0, *uarm = (struct obj *) 0,
-    *uswapwep = (struct obj *) 0,
-    *uquiver = (struct obj *) 0,       /* quiver */
-        *uarmu = (struct obj *) 0,     /* under-wear, so to speak */
-            *uskin = (struct obj *) 0, /* dragon armor, if a dragon */
-                *uarmc = (struct obj *) 0, *uarmh = (struct obj *) 0,
-    *uarms = (struct obj *) 0, *uarmg = (struct obj *) 0,
-    *uarmf = (struct obj *) 0, *uamul = (struct obj *) 0,
-    *uright = (struct obj *) 0, *uleft = (struct obj *) 0,
-    *ublindf = (struct obj *) 0, *uchain = (struct obj *) 0,
-    *uball = (struct obj *) 0;
+NEARDATA struct obj *uwep, *uarm, *uswapwep,
+    *uquiver, /* quiver */
+    *uarmu, /* under-wear, so to speak */
+    *uskin, /* dragon armor, if a dragon */
+    *uarmc, *uarmh, *uarms, *uarmg,*uarmf, *uamul,
+    *uright, *uleft, *ublindf, *uchain, *uball;
 
 #ifdef TEXTCOLOR
 /*
@@ -86,13 +80,8 @@ const int shield_static[SHIELD_COUNT] = {
     S_ss1, S_ss2, S_ss3, S_ss2, S_ss1, S_ss2, S_ss4,
 };
 
-/* used to zero all elements of a struct obj and a struct monst */
-NEARDATA struct obj zeroobj = DUMMY;
-NEARDATA struct monst zeromonst = DUMMY;
-/* used to zero out union any; initializer deliberately omitted */
-NEARDATA anything zeroany;
 
-NEARDATA struct c_color_names c_color_names = {
+NEARDATA const struct c_color_names c_color_names = {
     "black",  "amber", "golden", "light blue", "red",   "green",
     "silver", "blue",  "purple", "white",      "orange"
 };
@@ -116,7 +105,7 @@ const char *c_obj_colors[] = {
     "white",          /* CLR_WHITE */
 };
 
-struct c_common_strings c_common_strings = { "Nothing happens.",
+const struct c_common_strings c_common_strings = { "Nothing happens.",
                                              "That's enough tries!",
                                              "That is a silly thing to %s.",
                                              "shudder for a moment.",
@@ -141,16 +130,8 @@ NEARDATA winid WIN_MESSAGE = WIN_ERR;
 NEARDATA winid WIN_STATUS = WIN_ERR;
 NEARDATA winid WIN_MAP = WIN_ERR, WIN_INVEN = WIN_ERR;
 
-/* Windowing stuff that's really tty oriented, but present for all ports */
-struct tc_gbl_data tc_gbl_data = { 0, 0, 0, 0 }; /* AS,AE, LI,CO */
-
-char *fqn_prefix[PREFIX_COUNT] = { (char *) 0, (char *) 0, (char *) 0,
-                                   (char *) 0, (char *) 0, (char *) 0,
-                                   (char *) 0, (char *) 0, (char *) 0,
-                                   (char *) 0 };
-
 #ifdef PREFIXES_IN_USE
-char *fqn_prefix_names[PREFIX_COUNT] = {
+const char *fqn_prefix_names[PREFIX_COUNT] = {
     "hackdir",  "leveldir", "savedir",    "bonesdir",  "datadir",
     "scoredir", "lockdir",  "sysconfdir", "configdir", "troubledir"
 };
@@ -312,6 +293,11 @@ const struct instance_globals g_init = {
     DUMMY, /* youmonst */
     NULL, /* invent */
     DUMMY, /* context */
+    DUMMY, /* fqn_prefix */
+    DUMMY, /* tc_gbl_data */
+    DUMMY, /* zeroobj */
+    DUMMY, /* zeromonst */
+    DUMMY, /* zeronay */
 
     /* dig.c */
     UNDEFINED_VALUE, /* did_dig_msg */
@@ -608,6 +594,8 @@ const struct instance_globals g_init = {
 
 struct instance_globals g;
 
+#define ZERO(x) memset(&x, 0, sizeof(x))
+
 void
 decl_globals_init()
 {
@@ -629,6 +617,19 @@ decl_globals_init()
 
     g.subrooms = &g.rooms[MAXNROFROOMS + 1];
 
+    ZERO(flags);
+#ifdef SYSFLAGS
+    ZERO(sysflags);
+#endif
+    ZERO(iflags);
+    ZERO(u);
+    ZERO(ubirthday);
+    ZERO(urealtime);
+
+    uwep = uarm = uswapwep = uquiver = uarmu = uskin = uarmc = NULL;
+    uarmh = uarms = uarmg = uarmf = uamul = uright = uleft = NULL;
+    ublindf = uchain = uball = NULL;
+
 }
 
 /*decl.c*/
diff --git a/src/detect.c b/src/detect.c
index df61ef992..e060b36b5 100644
--- a/src/detect.c
+++ b/src/detect.c
@@ -404,7 +404,7 @@ outgoldmap:
             continue; /* probably overkill here */
         temp = 0;
         if (findgold(mtmp->minvent) || monsndx(mtmp->data) == PM_GOLD_GOLEM) {
-            gold = zeroobj; /* ensure oextra is cleared too */
+            gold = g.zeroobj; /* ensure oextra is cleared too */
             gold.otyp = GOLD_PIECE;
             gold.quan = (long) rnd(10); /* usually more than 1 */
             gold.ox = mtmp->mx;
@@ -730,7 +730,7 @@ int class;            /* an object class, 0 for all */
             && (!class || class == objects[mtmp->mappearance].oc_class)) {
             struct obj temp;
 
-            temp = zeroobj;
+            temp = g.zeroobj;
             temp.otyp = mtmp->mappearance; /* needed for obj_to_glyph() */
             temp.quan = 1L;
             temp.ox = mtmp->mx;
@@ -741,7 +741,7 @@ int class;            /* an object class, 0 for all */
                    && (!class || class == COIN_CLASS)) {
             struct obj gold;
 
-            gold = zeroobj; /* ensure oextra is cleared too */
+            gold = g.zeroobj; /* ensure oextra is cleared too */
             gold.otyp = GOLD_PIECE;
             gold.quan = (long) rnd(10); /* usually more than 1 */
             gold.ox = mtmp->mx;
@@ -857,7 +857,7 @@ int src_cursed;
     if (Hallucination || src_cursed) {
         struct obj obj; /* fake object */
 
-        obj = zeroobj;
+        obj = g.zeroobj;
         if (trap) {
             obj.ox = trap->tx;
             obj.oy = trap->ty;
diff --git a/src/display.c b/src/display.c
index 1dd377e54..0ba3f4c01 100644
--- a/src/display.c
+++ b/src/display.c
@@ -422,7 +422,7 @@ xchar worm_tail;            /* mon is actually a worm tail */
             /* Make a fake object to send to map_object(). */
             struct obj obj;
 
-            obj = zeroobj;
+            obj = g.zeroobj;
             obj.ox = x;
             obj.oy = y;
             obj.otyp = mon->mappearance;
diff --git a/src/do_name.c b/src/do_name.c
index 35a6a8ad8..56f997d4c 100644
--- a/src/do_name.c
+++ b/src/do_name.c
@@ -582,7 +582,7 @@ int gloc;
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany;
+    any = g.zeroany;
 
     /* gather_locs returns array[0] == you. skip it. */
     for (i = 1; i < gcount; i++) {
@@ -1332,7 +1332,7 @@ docallcmd()
 
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
-    any = zeroany;
+    any = g.zeroany;
     any.a_char = 'm'; /* group accelerator 'C' */
     add_menu(win, NO_GLYPH, &any, abc ? 0 : any.a_char, 'C', ATR_NONE,
              "a monster", MENU_UNSELECTED);
diff --git a/src/dogmove.c b/src/dogmove.c
index cb1a26bd3..45c1305c7 100644
--- a/src/dogmove.c
+++ b/src/dogmove.c
@@ -26,7 +26,7 @@ struct monst *mon;
 {
     struct obj *obj, *wep, dummy, *pickaxe, *unihorn, *key;
 
-    dummy = zeroobj;
+    dummy = g.zeroobj;
     dummy.otyp = GOLD_PIECE; /* not STRANGE_OBJECT or tools of interest */
     dummy.oartifact = 1; /* so real artifact won't override "don't keep it" */
     pickaxe = unihorn = key = (struct obj *) 0;
diff --git a/src/dungeon.c b/src/dungeon.c
index e0afc7d77..f8df0ebcb 100644
--- a/src/dungeon.c
+++ b/src/dungeon.c
@@ -726,8 +726,8 @@ init_dungeons()
         Strcat(tbuf, "\" from ");
 #ifdef PREFIXES_IN_USE
         Strcat(tbuf, "\n\"");
-        if (fqn_prefix[DATAPREFIX])
-            Strcat(tbuf, fqn_prefix[DATAPREFIX]);
+        if (g.fqn_prefix[DATAPREFIX])
+            Strcat(tbuf, g.fqn_prefix[DATAPREFIX]);
 #else
         Strcat(tbuf, "\"");
 #endif
@@ -737,7 +737,7 @@ init_dungeons()
 #endif
 #ifdef WIN32
         interject_assistance(1, INTERJECT_PANIC, (genericptr_t) tbuf,
-                             (genericptr_t) fqn_prefix[DATAPREFIX]);
+                             (genericptr_t) g.fqn_prefix[DATAPREFIX]);
 #endif
         panic1(tbuf);
     }
@@ -1752,7 +1752,7 @@ boolean unreachable;
     lchoices->lev[lchoices->idx] = lvl_p->dlevel;
     lchoices->dgn[lchoices->idx] = lvl_p->dnum;
     lchoices->playerlev[lchoices->idx] = depth(lvl_p);
-    any = zeroany;
+    any = g.zeroany;
     if (unreachable) {
         /* not selectable, but still consumes next menuletter;
            prepend padding in place of missing menu selector */
@@ -1872,7 +1872,7 @@ xchar *rdgn;
                         dptr->depth_start + dptr->entry_lev - 1);
         }
         if (bymenu) {
-            any = zeroany;
+            any = g.zeroany;
             add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings, buf,
                      MENU_UNSELECTED);
         } else
diff --git a/src/end.c b/src/end.c
index 37becf57a..d8edcb030 100644
--- a/src/end.c
+++ b/src/end.c
@@ -1739,7 +1739,7 @@ set_vanq_order()
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany; /* zero out all bits */
+    any = g.zeroany; /* zero out all bits */
     for (i = 0; i < SIZE(vanqorders); i++) {
         if (i == VANQ_ALPHA_MIX || i == VANQ_MCLS_HTOL) /* skip these */
             continue;
diff --git a/src/engrave.c b/src/engrave.c
index 2bd8d0abf..041d8713f 100644
--- a/src/engrave.c
+++ b/src/engrave.c
@@ -539,10 +539,10 @@ doengrave()
      */
 
     otmp = getobj(styluses, "write with");
-    if (!otmp) /* otmp == zeroobj if fingers */
+    if (!otmp) /* otmp == g.zeroobj if fingers */
         return 0;
 
-    if (otmp == &zeroobj) {
+    if (otmp == &g.zeroobj) {
         Strcat(strcpy(fbuf, "your "), body_part(FINGERTIP));
         writer = fbuf;
     } else
@@ -571,7 +571,7 @@ doengrave()
         return 0;
     }
     if (IS_GRAVE(levl[u.ux][u.uy].typ)) {
-        if (otmp == &zeroobj) { /* using only finger */
+        if (otmp == &g.zeroobj) { /* using only finger */
             You("would only make a small smudge on the %s.",
                 surface(u.ux, u.uy));
             return 0;
@@ -1008,7 +1008,7 @@ doengrave()
     }
 
     /* Tell adventurer what is going on */
-    if (otmp != &zeroobj)
+    if (otmp != &g.zeroobj)
         You("%s the %s with %s.", everb, eloc, doname(otmp));
     else
         You("%s the %s with your %s.", everb, eloc, body_part(FINGERTIP));
diff --git a/src/files.c b/src/files.c
index b942d0b06..90950a064 100644
--- a/src/files.c
+++ b/src/files.c
@@ -346,19 +346,19 @@ int buffnum UNUSED_if_not_PREFIXES_IN_USE;
 #else
     if (!basenam || whichprefix < 0 || whichprefix >= PREFIX_COUNT)
         return basenam;
-    if (!fqn_prefix[whichprefix])
+    if (!g.fqn_prefix[whichprefix])
         return basenam;
     if (buffnum < 0 || buffnum >= FQN_NUMBUF) {
         impossible("Invalid fqn_filename_buffer specified: %d", buffnum);
         buffnum = 0;
     }
-    if (strlen(fqn_prefix[whichprefix]) + strlen(basenam)
+    if (strlen(g.fqn_prefix[whichprefix]) + strlen(basenam)
         >= FQN_MAX_FILENAME) {
-        impossible("fqname too long: %s + %s", fqn_prefix[whichprefix],
+        impossible("fqname too long: %s + %s", g.fqn_prefix[whichprefix],
                    basenam);
         return basenam; /* XXX */
     }
-    Strcpy(fqn_filename_buffer[buffnum], fqn_prefix[whichprefix]);
+    Strcpy(fqn_filename_buffer[buffnum], g.fqn_prefix[whichprefix]);
     return strcat(fqn_filename_buffer[buffnum], basenam);
 #endif
 }
@@ -399,7 +399,7 @@ char *reasonbuf; /* reasonbuf must be at least BUFSZ, supplied by caller */
             if (!(details = strerror(errno)))
 #endif
                 details = "";
-            Sprintf(panicbuf2, "\"%s\", (%d) %s", fqn_prefix[prefcnt], errno,
+            Sprintf(panicbuf2, "\"%s\", (%d) %s", g.fqn_prefix[prefcnt], errno,
                     details);
             paniclog(panicbuf1, panicbuf2);
             failcount++;
@@ -2123,9 +2123,9 @@ int prefixid;
     if ((ptr = index(bufp, ';')) != 0)
         *ptr = '\0';
     if (strlen(bufp) > 0) {
-        fqn_prefix[prefixid] = (char *) alloc(strlen(bufp) + 2);
-        Strcpy(fqn_prefix[prefixid], bufp);
-        append_slash(fqn_prefix[prefixid]);
+        g.fqn_prefix[prefixid] = (char *) alloc(strlen(bufp) + 2);
+        Strcpy(g.fqn_prefix[prefixid], bufp);
+        append_slash(g.fqn_prefix[prefixid]);
     }
 }
 #endif
@@ -2269,7 +2269,7 @@ char *origbuf;
 
     /* Go through possible variables */
     /* some of these (at least LEVELS and SAVE) should now set the
-     * appropriate fqn_prefix[] rather than specialized variables
+     * appropriate g.fqn_prefix[] rather than specialized variables
      */
     if (match_varname(buf, "OPTIONS", 4)) {
         /* hack: un-mungspaces to allow consecutive spaces in
@@ -2929,7 +2929,7 @@ STATIC_DCL void
 wizkit_addinv(obj)
 struct obj *obj;
 {
-    if (!obj || obj == &zeroobj)
+    if (!obj || obj == &g.zeroobj)
         return;
 
     /* subset of starting inventory pre-ID */
@@ -2959,7 +2959,7 @@ char *buf;
     struct obj *otmp = readobjnam(buf, (struct obj *) 0);
 
     if (otmp) {
-        if (otmp != &zeroobj)
+        if (otmp != &g.zeroobj)
             wizkit_addinv(otmp);
     } else {
         /* .60 limits output line width to 79 chars */
diff --git a/src/hack.c b/src/hack.c
index 144a04e05..2409c9f8a 100644
--- a/src/hack.c
+++ b/src/hack.c
@@ -28,7 +28,7 @@ anything *
 uint_to_any(ui)
 unsigned ui;
 {
-    g.tmp_anything = zeroany;
+    g.tmp_anything = g.zeroany;
     g.tmp_anything.a_uint = ui;
     return &g.tmp_anything;
 }
@@ -37,7 +37,7 @@ anything *
 long_to_any(lng)
 long lng;
 {
-    g.tmp_anything = zeroany;
+    g.tmp_anything = g.zeroany;
     g.tmp_anything.a_long = lng;
     return &g.tmp_anything;
 }
@@ -46,7 +46,7 @@ anything *
 monst_to_any(mtmp)
 struct monst *mtmp;
 {
-    g.tmp_anything = zeroany;
+    g.tmp_anything = g.zeroany;
     g.tmp_anything.a_monst = mtmp;
     return &g.tmp_anything;
 }
@@ -55,7 +55,7 @@ anything *
 obj_to_any(obj)
 struct obj *obj;
 {
-    g.tmp_anything = zeroany;
+    g.tmp_anything = g.zeroany;
     g.tmp_anything.a_obj = obj;
     return &g.tmp_anything;
 }
diff --git a/src/invent.c b/src/invent.c
index dd3017da2..d4d9a48c1 100644
--- a/src/invent.c
+++ b/src/invent.c
@@ -1376,7 +1376,7 @@ const char *action;
  * getobj returns:
  *      struct obj *xxx:        object to do something with.
  *      (struct obj *) 0        error return: no object.
- *      &zeroobj                explicitly no object (as in w-).
+ *      &g.zeroobj                explicitly no object (as in w-).
 !!!! test if gold can be used in unusual ways (eaten etc.)
 !!!! may be able to remove "usegold"
  */
@@ -1664,7 +1664,7 @@ register const char *let, *word;
                 You("mime %s something%s%s.", ing_suffix(bp), suf ? " " : "",
                     suf ? suf : "");
             }
-            return (allownone ? &zeroobj : (struct obj *) 0);
+            return (allownone ? &g.zeroobj : (struct obj *) 0);
         }
 redo_menu:
         /* since gold is now kept in inventory, we need to do processing for
@@ -1697,7 +1697,7 @@ redo_menu:
             if (!ilet)
                 continue;
             if (ilet == HANDS_SYM)
-                return &zeroobj;
+                return &g.zeroobj;
             if (ilet == '\033') {
                 if (flags.verbose)
                     pline1(Never_mind);
@@ -2587,7 +2587,7 @@ long *out_cnt;
                             (boolean FDECL((*), (OBJ_P))) 0);
 
     start_menu(win);
-    any = zeroany;
+    any = g.zeroany;
     if (wizard && iflags.override_ID) {
         int unid_cnt;
         char prompt[QBUFSZ];
@@ -2635,7 +2635,7 @@ nextclass:
         if (!flags.sortpack || otmp->oclass == *invlet) {
             if (wizid && !not_fully_identified(otmp))
                 continue;
-            any = zeroany; /* all bits zero */
+            any = g.zeroany; /* all bits zero */
             ilet = otmp->invlet;
             if (flags.sortpack && !classcount) {
                 add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
@@ -2661,7 +2661,7 @@ nextclass:
         }
     }
     if (iflags.force_invmenu && lets && want_reply) {
-        any = zeroany;
+        any = g.zeroany;
         add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
                  "Special", MENU_UNSELECTED);
         any.a_char = '*';
@@ -2674,7 +2674,7 @@ nextclass:
        recognized via any.a_char still being zero; the n==0 case above
        gets skipped for perm_invent), put something into the menu */
     if (iflags.perm_invent && !lets && !any.a_char) {
-        any = zeroany;
+        any = g.zeroany;
         add_menu(win, NO_GLYPH, &any, 0, 0, 0,
                  not_carrying_anything, MENU_UNSELECTED);
         want_reply = FALSE;
@@ -2746,7 +2746,7 @@ char avoidlet;
         win = create_nhwindow(NHW_MENU);
         start_menu(win);
         while (!invdone) {
-            any = zeroany; /* set all bits to zero */
+            any = g.zeroany; /* set all bits to zero */
             classcount = 0;
             for (otmp = g.invent; otmp; otmp = otmp->nobj) {
                 ilet = otmp->invlet;
@@ -2754,7 +2754,7 @@ char avoidlet;
                     continue;
                 if (!flags.sortpack || otmp->oclass == *invlet) {
                     if (flags.sortpack && !classcount) {
-                        any = zeroany; /* zero */
+                        any = g.zeroany; /* zero */
                         add_menu(win, NO_GLYPH, &any, 0, 0,
                                  iflags.menu_headings,
                                  let_to_name(*invlet, FALSE, FALSE),
@@ -4170,7 +4170,7 @@ const char *hdr, *txt;
     anything any;
     menu_item *selected;
 
-    any = zeroany;
+    any = g.zeroany;
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
     add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings, hdr,
diff --git a/src/light.c b/src/light.c
index 0abc99646..23308e180 100644
--- a/src/light.c
+++ b/src/light.c
@@ -89,7 +89,7 @@ anything *id;
     light_source *curr, *prev;
     anything tmp_id;
 
-    tmp_id = zeroany;
+    tmp_id = g.zeroany;
     /* need to be prepared for dealing a with light source which
        has only been partially restored during a level change
        (in particular: chameleon vs prot. from shape changers) */
@@ -443,14 +443,14 @@ light_source *ls;
             arg_save = ls->id;
             if (ls->type == LS_OBJECT) {
                 otmp = ls->id.a_obj;
-                ls->id = zeroany;
+                ls->id = g.zeroany;
                 ls->id.a_uint = otmp->o_id;
                 if (find_oid((unsigned) ls->id.a_uint) != otmp)
                     impossible("write_ls: can't find obj #%u!",
                                ls->id.a_uint);
             } else { /* ls->type == LS_MONSTER */
                 mtmp = (struct monst *) ls->id.a_monst;
-                ls->id = zeroany;
+                ls->id = g.zeroany;
                 ls->id.a_uint = mtmp->m_id;
                 if (find_mid((unsigned) ls->id.a_uint, FM_EVERYWHERE) != mtmp)
                     impossible("write_ls: can't find mon #%u!",
diff --git a/src/makemon.c b/src/makemon.c
index 3c5de25fe..b7d0d4bfe 100644
--- a/src/makemon.c
+++ b/src/makemon.c
@@ -1181,7 +1181,7 @@ int mmflags;
     }
     (void) propagate(mndx, countbirth, FALSE);
     mtmp = newmonst();
-    *mtmp = zeromonst; /* clear all entries in structure */
+    *mtmp = g.zeromonst; /* clear all entries in structure */
 
     if (mmflags & MM_EGD)
         newegd(mtmp);
diff --git a/src/mkobj.c b/src/mkobj.c
index 955a709be..9a060b375 100644
--- a/src/mkobj.c
+++ b/src/mkobj.c
@@ -112,7 +112,7 @@ struct obj *otmp;
     if (!OMONST(otmp)) {
         struct monst *m = newmonst();
 
-        *m = zeromonst;
+        *m = g.zeromonst;
         OMONST(otmp) = m;
     }
 }
@@ -760,7 +760,7 @@ boolean artif;
     char let = objects[otyp].oc_class;
 
     otmp = newobj();
-    *otmp = zeroobj;
+    *otmp = g.zeroobj;
     otmp->age = g.monstermoves;
     otmp->o_id = g.context.ident++;
     if (!otmp->o_id)
diff --git a/src/mplayer.c b/src/mplayer.c
index dfb97ab85..78aeb2640 100644
--- a/src/mplayer.c
+++ b/src/mplayer.c
@@ -334,7 +334,7 @@ boolean special;
     int pm, x, y;
     struct monst fakemon;
 
-    fakemon = zeromonst;
+    fakemon = g.zeromonst;
     while (num) {
         int tryct = 0;
 
diff --git a/src/muse.c b/src/muse.c
index 979a7b65a..ee57b1884 100644
--- a/src/muse.c
+++ b/src/muse.c
@@ -2354,7 +2354,7 @@ boolean by_you;
        spells could toss pillar of fire at self--probably too suicidal] */
     if (!mon->mcan && !mon->mspec_used
         && attacktype_fordmg(mptr, AT_BREA, AD_FIRE)) {
-        odummy = zeroobj; /* otyp == STRANGE_OBJECT */
+        odummy = g.zeroobj; /* otyp == STRANGE_OBJECT */
         return muse_unslime(mon, &odummy, (struct trap *) 0, by_you);
     }
 
@@ -2393,7 +2393,7 @@ boolean by_you;
             }
         }
         if (t && t->ttyp == FIRE_TRAP)
-            return muse_unslime(mon, &zeroobj, t, by_you);
+            return muse_unslime(mon, &g.zeroobj, t, by_you);
 
     } /* MUSE */
 
diff --git a/src/o_init.c b/src/o_init.c
index a844b2e95..482010ae3 100644
--- a/src/o_init.c
+++ b/src/o_init.c
@@ -511,7 +511,7 @@ doclassdisco()
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
     }
-    any = zeroany;
+    any = g.zeroany;
     menulet = 'a';
 
     /* check whether we've discovered any unique objects */
@@ -667,7 +667,7 @@ rename_disco()
     anything any;
     menu_item *selected = 0;
 
-    any = zeroany;
+    any = g.zeroany;
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
 
@@ -719,7 +719,7 @@ rename_disco()
         if (dis != STRANGE_OBJECT) {
             struct obj odummy;
 
-            odummy = zeroobj;
+            odummy = g.zeroobj;
             odummy.otyp = dis;
             odummy.oclass = objects[dis].oc_class;
             odummy.quan = 1L;
diff --git a/src/objnam.c b/src/objnam.c
index 556b26cbe..cfa65b4b3 100644
--- a/src/objnam.c
+++ b/src/objnam.c
@@ -734,7 +734,7 @@ struct obj *obj;
 
     /* caveat: this makes a lot of assumptions about which fields
        are required in order for xname() to yield a sensible result */
-    bareobj = zeroobj;
+    bareobj = g.zeroobj;
     bareobj.otyp = otyp;
     bareobj.oclass = obj->oclass;
     bareobj.dknown = obj->dknown;
@@ -2806,7 +2806,7 @@ char oclass;
  * Return something wished for.  Specifying a null pointer for
  * the user request string results in a random object.  Otherwise,
  * if asking explicitly for "nothing" (or "nil") return no_wish;
- * if not an object return &zeroobj; if an error (no matching object),
+ * if not an object return &g.zeroobj; if an error (no matching object),
  * return null.
  */
 struct obj *
@@ -3571,7 +3571,7 @@ wiztrap:
                       (trap != MAGIC_PORTAL) ? "" : " to nowhere");
             } else
                 pline("Creation of %s failed.", an(tname));
-            return &zeroobj;
+            return &g.zeroobj;
         }
 
         /* furniture and terrain */
@@ -3584,20 +3584,20 @@ wiztrap:
                 lev->blessedftn = 1;
             pline("A %sfountain.", lev->blessedftn ? "magic " : "");
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
         if (!BSTRCMPI(bp, p - 6, "throne")) {
             lev->typ = THRONE;
             pline("A throne.");
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
         if (!BSTRCMPI(bp, p - 4, "sink")) {
             lev->typ = SINK;
             g.level.flags.nsinks++;
             pline("A sink.");
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
         /* ("water" matches "potion of water" rather than terrain) */
         if (!BSTRCMPI(bp, p - 4, "pool") || !BSTRCMPI(bp, p - 4, "moat")) {
@@ -3607,7 +3607,7 @@ wiztrap:
             /* Must manually make kelp! */
             water_damage_chain(g.level.objects[x][y], TRUE);
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
         if (!BSTRCMPI(bp, p - 4, "lava")) { /* also matches "molten lava" */
             lev->typ = LAVAPOOL;
@@ -3616,7 +3616,7 @@ wiztrap:
             if (!(Levitation || Flying))
                 (void) lava_effects();
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
 
         if (!BSTRCMPI(bp, p - 5, "altar")) {
@@ -3636,7 +3636,7 @@ wiztrap:
             lev->altarmask = Align2amask(al);
             pline("%s altar.", An(align_str(al)));
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
 
         if (!BSTRCMPI(bp, p - 5, "grave")
@@ -3645,7 +3645,7 @@ wiztrap:
             pline("%s.", IS_GRAVE(lev->typ) ? "A grave"
                                             : "Can't place a grave here");
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
 
         if (!BSTRCMPI(bp, p - 4, "tree")) {
@@ -3653,14 +3653,14 @@ wiztrap:
             pline("A tree.");
             newsym(x, y);
             block_point(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
 
         if (!BSTRCMPI(bp, p - 4, "bars")) {
             lev->typ = IRONBARS;
             pline("Iron bars.");
             newsym(x, y);
-            return &zeroobj;
+            return &g.zeroobj;
         }
     }
 
@@ -3969,7 +3969,7 @@ typfnd:
          || (otmp->oartifact && rn2(nartifact_exist()) > 1)) && !wizard) {
         artifact_exists(otmp, safe_oname(otmp), FALSE);
         obfree(otmp, (struct obj *) 0);
-        otmp = &zeroobj;
+        otmp = &g.zeroobj;
         pline("For a moment, you feel %s in your %s, but it disappears!",
               something, makeplural(body_part(HAND)));
     }
diff --git a/src/options.c b/src/options.c
index 8e30441bc..e64eaed13 100644
--- a/src/options.c
+++ b/src/options.c
@@ -1447,7 +1447,7 @@ const char *prompt;
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < SIZE(colornames); i++) {
         if (!colornames[i].name)
             break;
@@ -1493,7 +1493,7 @@ const char *prompt;
         default_attr = iflags.menu_headings;
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < SIZE(attrnames); i++) {
         if (!attrnames[i].name)
             break;
@@ -1592,7 +1592,7 @@ query_msgtype()
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < SIZE(msgtype_names); i++)
         if (msgtype_names[i].descr) {
             any.a_int = msgtype_names[i].msgtyp + 1;
@@ -4231,7 +4231,7 @@ int indexoffset;    /* value to add to index in compopt[], or zero
     anything any;
     int i;
 
-    any = zeroany;
+    any = g.zeroany;
     if (indexoffset == 0) {
         any.a_int = 0;
         value = get_compopt_value(option, buf2);
@@ -4268,7 +4268,7 @@ char *bufx;
 int nset;
 {
     char buf[BUFSZ], buf2[BUFSZ];
-    anything any = zeroany;
+    anything any = g.zeroany;
 
     any.a_int = id;
     if (!bufx)
@@ -4371,7 +4371,7 @@ doset() /* changing options via menu by Per Liboriussen */
         made_fmtstr = TRUE;
     }
 
-    any = zeroany;
+    any = g.zeroany;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
              "Booleans (selecting will toggle value):", MENU_UNSELECTED);
     any.a_int = 0;
@@ -4402,7 +4402,7 @@ doset() /* changing options via menu by Per Liboriussen */
 
     boolcount = i;
     indexoffset = boolcount;
-    any = zeroany;
+    any = g.zeroany;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
              "Compounds (selecting will prompt for new value):",
@@ -4431,7 +4431,7 @@ doset() /* changing options via menu by Per Liboriussen */
                                (pass == DISP_IN_GAME) ? 0 : indexoffset);
             }
 
-    any = zeroany;
+    any = g.zeroany;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
              "Other settings:", MENU_UNSELECTED);
@@ -4445,7 +4445,7 @@ doset() /* changing options via menu by Per Liboriussen */
     }
 
 #ifdef PREFIXES_IN_USE
-    any = zeroany;
+    any = g.zeroany;
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     add_menu(tmpwin, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
              "Variable playground locations:", MENU_UNSELECTED);
@@ -4544,7 +4544,7 @@ int numtotal;
     opt_idx = 0;
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < SIZE(action_titles); i++) {
         char tmpbuf[BUFSZ];
 
@@ -4590,7 +4590,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < SIZE(menutype); i++) {
             style_name = menutype[i];
             /* note: separate `style_name' variable used
@@ -4610,7 +4610,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; paranoia[i].flagmask != 0; ++i) {
             if (paranoia[i].flagmask == PARANOID_BONES && !wizard)
                 continue;
@@ -4642,7 +4642,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < SIZE(burdentype); i++) {
             burden_name = burdentype[i];
             any.a_int = i + 1;
@@ -4673,7 +4673,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < NUM_DISCLOSURE_OPTIONS; i++) {
             Sprintf(buf, "%-12s[%c%c]", disclosure_names[i],
                     flags.end_disclose[i], disclosure_options[i]);
@@ -4701,7 +4701,7 @@ boolean setinitial, setfromfile;
                         disclosure_names[i]);
                 tmpwin = create_nhwindow(NHW_MENU);
                 start_menu(tmpwin);
-                any = zeroany;
+                any = g.zeroany;
                 /* 'y','n',and '+' work as alternate selectors; '-' doesn't */
                 any.a_char = DISCLOSE_NO_WITHOUT_PROMPT;
                 add_menu(tmpwin, NO_GLYPH, &any, 0, any.a_char, ATR_NONE,
@@ -4750,7 +4750,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < SIZE(runmodes); i++) {
             mode_name = runmodes[i];
             any.a_int = i + 1;
@@ -4770,7 +4770,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         any.a_char = GPCOORDS_COMPASS;
         add_menu(tmpwin, NO_GLYPH, &any, GPCOORDS_COMPASS,
                  0, ATR_NONE, "compass ('east' or '3s' or '2n,4w')",
@@ -4829,7 +4829,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         any.a_char = (GFILTER_NONE + 1);
         add_menu(tmpwin, NO_GLYPH, &any, 'n',
                  0, ATR_NONE, "no filtering",
@@ -4860,7 +4860,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         any.a_char = 's';
         add_menu(tmpwin, NO_GLYPH, &any, 's', 0, ATR_NONE, "single",
                  MENU_UNSELECTED);
@@ -4886,7 +4886,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < SIZE(sortltype); i++) {
             sortl_name = sortltype[i];
             any.a_char = *sortl_name;
@@ -4913,7 +4913,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = ALIGN_TOP;
         add_menu(tmpwin, NO_GLYPH, &any, 't', 0, ATR_NONE, "top",
                  MENU_UNSELECTED);
@@ -4948,7 +4948,7 @@ boolean setinitial, setfromfile;
 
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany;
+        any = g.zeroany;
         for (i = 0; i < SIZE(npchoices); i++) {
             any.a_int = i + 1;
             add_menu(tmpwin, NO_GLYPH, &any, 'a' + i, 0, ATR_NONE,
@@ -5024,7 +5024,7 @@ boolean setinitial, setfromfile;
 
             tmpwin = create_nhwindow(NHW_MENU);
             start_menu(tmpwin);
-            any = zeroany;
+            any = g.zeroany;
             mt_idx = 0;
             while (tmp) {
                 mtype = msgtype2name(tmp->msgtype);
@@ -5092,7 +5092,7 @@ boolean setinitial, setfromfile;
 
             tmpwin = create_nhwindow(NHW_MENU);
             start_menu(tmpwin);
-            any = zeroany;
+            any = g.zeroany;
             mc_idx = 0;
             while (tmp) {
                 sattr = attr2attrname(tmp->attr);
@@ -5167,7 +5167,7 @@ boolean setinitial, setfromfile;
                 if (numapes[pass] == 0)
                     continue;
                 ape = iflags.autopickup_exceptions[pass];
-                any = zeroany;
+                any = g.zeroany;
                 add_menu(tmpwin, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
                          (pass == 0) ? "Never pickup" : "Always pickup",
                          MENU_UNSELECTED);
@@ -5246,7 +5246,7 @@ boolean setinitial, setfromfile;
             Sprintf(fmtstr, "%%-%ds %%s", biggest + 5);
             tmpwin = create_nhwindow(NHW_MENU);
             start_menu(tmpwin);
-            any = zeroany;
+            any = g.zeroany;
             any.a_int = 1;
             add_menu(tmpwin, NO_GLYPH, &any, let++, 0, ATR_NONE,
                      "Default Symbols", MENU_UNSELECTED);
@@ -5747,8 +5747,8 @@ char *buf;
 #ifdef PREFIXES_IN_USE
     } else {
         for (i = 0; i < PREFIX_COUNT; ++i)
-            if (!strcmp(optname, fqn_prefix_names[i]) && fqn_prefix[i])
-                Sprintf(buf, "%s", fqn_prefix[i]);
+            if (!strcmp(optname, fqn_prefix_names[i]) && g.fqn_prefix[i])
+                Sprintf(buf, "%s", g.fqn_prefix[i]);
 #endif
     }
 
@@ -6291,7 +6291,7 @@ char *class_select;
         return 0;
     accelerator = 0;
     next_accelerator = 'a';
-    any = zeroany;
+    any = g.zeroany;
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
     while (*class_list) {
@@ -6333,7 +6333,7 @@ char *class_select;
     }
     if (category == 1 && next_accelerator <= 'z') {
         /* for objects, add "A - ' '  all classes", after a separator */
-        any = zeroany;
+        any = g.zeroany;
         add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
         any.a_int = (int) ' ';
         Sprintf(buf, "%c  %s", (char) any.a_int, "all classes of objects");
diff --git a/src/pager.c b/src/pager.c
index 6c301f1ea..9dba075a0 100644
--- a/src/pager.c
+++ b/src/pager.c
@@ -1090,7 +1090,7 @@ coord *click_cc;
             winid win;
             anything any;
 
-            any = zeroany;
+            any = g.zeroany;
             win = create_nhwindow(NHW_MENU);
             start_menu(win);
             any.a_char = '/';
@@ -1108,7 +1108,7 @@ coord *click_cc;
                      flags.lootabc ? 0 : any.a_char, 'n', ATR_NONE,
                      "something else (by symbol or name)", MENU_UNSELECTED);
             if (!u.uswallow && !Hallucination) {
-                any = zeroany;
+                any = g.zeroany;
                 add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE,
                          "", MENU_UNSELECTED);
                 /* these options work sensibly for the swallowed case,
@@ -1955,7 +1955,7 @@ dohelp()
     anything any;
     int sel;
 
-    any = zeroany; /* zero all bits */
+    any = g.zeroany; /* zero all bits */
     start_menu(tmpwin);
 
     for (i = 0; help_menu_items[i].text; i++) {
diff --git a/src/pickup.c b/src/pickup.c
index 316f594de..85c290b22 100644
--- a/src/pickup.c
+++ b/src/pickup.c
@@ -869,7 +869,7 @@ boolean FDECL((*allow), (OBJ_P)); /* allow function */
 
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
-    any = zeroany;
+    any = g.zeroany;
     /*
      * Run through the list and add the objects to the menu.  If
      * INVORDER_SORT is set, we'll run through the list once for
@@ -892,7 +892,7 @@ boolean FDECL((*allow), (OBJ_P)); /* allow function */
             if ((*allow)(curr)) {
                 /* if sorting, print type name (once only) */
                 if (sorted && !printed_type_name) {
-                    any = zeroany;
+                    any = g.zeroany;
                     add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
                              let_to_name(*pack, FALSE,
                                          ((how != PICK_NONE)
@@ -917,14 +917,14 @@ boolean FDECL((*allow), (OBJ_P)); /* allow function */
     if (engulfer) {
         char buf[BUFSZ];
 
-        any = zeroany;
+        any = g.zeroany;
         if (sorted && n > 1) {
             Sprintf(buf, "%s Creatures",
                     is_animal(u.ustuck->data) ? "Swallowed" : "Engulfed");
             add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings, buf,
                      MENU_UNSELECTED);
         }
-        fake_hero_object = zeroobj;
+        fake_hero_object = g.zeroobj;
         fake_hero_object.quan = 1L; /* not strictly necessary... */
         any.a_obj = &fake_hero_object;
         add_menu(win, mon_to_glyph(&g.youmonst), &any,
@@ -959,7 +959,7 @@ boolean FDECL((*allow), (OBJ_P)); /* allow function */
             n = 0;
         } else if (k < n) {
             /* other stuff plus fake_hero; last slot is now unused */
-            (*pick_list)[k].item = zeroany;
+            (*pick_list)[k].item = g.zeroany;
             (*pick_list)[k].count = 0L;
             n = k;
         }
@@ -1046,20 +1046,20 @@ int how;               /* type of query */
 
     if (qflags & CHOOSE_ALL) {
         invlet = 'A';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'A';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  (qflags & WORN_TYPES) ? "Auto-select every item being worn"
                                        : "Auto-select every item",
                  MENU_UNSELECTED);
 
-        any = zeroany;
+        any = g.zeroany;
         add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     }
 
     if ((qflags & ALL_TYPES) && (ccount > 1)) {
         invlet = 'a';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = ALL_TYPES_SELECTED;
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  (qflags & WORN_TYPES) ? "All worn types" : "All types",
@@ -1074,7 +1074,7 @@ int how;               /* type of query */
                 if (ofilter && !(*ofilter)(curr))
                     continue;
                 if (!collected_type_name) {
-                    any = zeroany;
+                    any = g.zeroany;
                     any.a_int = curr->oclass;
                     add_menu(
                         win, NO_GLYPH, &any, invlet++,
@@ -1096,14 +1096,14 @@ int how;               /* type of query */
 
     if (do_unpaid || (qflags & BILLED_TYPES) || do_blessed || do_cursed
         || do_uncursed || do_buc_unknown) {
-        any = zeroany;
+        any = g.zeroany;
         add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, "", MENU_UNSELECTED);
     }
 
     /* unpaid items if there are any */
     if (do_unpaid) {
         invlet = 'u';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'u';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE, "Unpaid items",
                  MENU_UNSELECTED);
@@ -1111,7 +1111,7 @@ int how;               /* type of query */
     /* billed items: checked by caller, so always include if BILLED_TYPES */
     if (qflags & BILLED_TYPES) {
         invlet = 'x';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'x';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  "Unpaid items already used up", MENU_UNSELECTED);
@@ -1122,28 +1122,28 @@ int how;               /* type of query */
        reversing the usual sequence of 'U' and 'C' in BUCX */
     if (do_blessed) {
         invlet = 'B';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'B';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  "Items known to be Blessed", MENU_UNSELECTED);
     }
     if (do_cursed) {
         invlet = 'C';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'C';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  "Items known to be Cursed", MENU_UNSELECTED);
     }
     if (do_uncursed) {
         invlet = 'U';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'U';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  "Items known to be Uncursed", MENU_UNSELECTED);
     }
     if (do_buc_unknown) {
         invlet = 'X';
-        any = zeroany;
+        any = g.zeroany;
         any.a_int = 'X';
         add_menu(win, NO_GLYPH, &any, invlet, 0, ATR_NONE,
                  "Items of unknown Bless/Curse status", MENU_UNSELECTED);
@@ -1947,7 +1947,7 @@ reverse_loot()
             coffers->owt = weight(coffers);
             coffers->cknown = 0;
             if (!coffers->olocked) {
-                boxdummy = zeroobj, boxdummy.otyp = SPE_WIZARD_LOCK;
+                boxdummy = g.zeroobj, boxdummy.otyp = SPE_WIZARD_LOCK;
                 (void) boxlock(coffers, &boxdummy);
             }
         } else if (levl[x][y].looted != T_LOOTED
@@ -2833,7 +2833,7 @@ boolean outokay, inokay, alreadyused, more_containers;
     int n;
     const char *menuselector = flags.lootabc ? abc_chars : lootchars;
 
-    any = zeroany;
+    any = g.zeroany;
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
 
@@ -2930,7 +2930,7 @@ dotip()
                 menu_item *pick_list = (menu_item *) 0;
                 struct obj dummyobj, *otmp;
 
-                any = zeroany;
+                any = g.zeroany;
                 win = create_nhwindow(NHW_MENU);
                 start_menu(win);
 
@@ -2943,7 +2943,7 @@ dotip()
                                  doname(cobj), MENU_UNSELECTED);
                     }
                 if (g.invent) {
-                    any = zeroany;
+                    any = g.zeroany;
                     add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE,
                              "", MENU_UNSELECTED);
                     any.a_obj = &dummyobj;
diff --git a/src/potion.c b/src/potion.c
index df093da10..563a3cba1 100644
--- a/src/potion.c
+++ b/src/potion.c
@@ -2223,7 +2223,7 @@ more_dips:
             if (!objects[old_otyp].oc_uname
                 && !objects[old_otyp].oc_name_known && old_dknown) {
                 struct obj fakeobj;
-                fakeobj = zeroobj;
+                fakeobj = g.zeroobj;
                 fakeobj.dknown = 1;
                 fakeobj.otyp = old_otyp;
                 fakeobj.oclass = POTION_CLASS;
diff --git a/src/region.c b/src/region.c
index ed82995c1..2614ecc74 100644
--- a/src/region.c
+++ b/src/region.c
@@ -131,7 +131,7 @@ int nrect;
     reg->n_monst = 0;
     reg->max_monst = 0;
     reg->monsters = (unsigned int *) 0;
-    reg->arg = zeroany;
+    reg->arg = g.zeroany;
     return reg;
 }
 
@@ -930,7 +930,7 @@ genericptr_t p2 UNUSED;
     /* If it was a thick cloud, it dissipates a little first */
     if (damage >= 5) {
         damage /= 2; /* It dissipates, let's do less damage */
-        reg->arg = zeroany;
+        reg->arg = g.zeroany;
         reg->arg.a_int = damage;
         reg->ttl = 2L; /* Here's the trick : reset ttl */
         return FALSE;  /* THEN return FALSE, means "still there" */
@@ -1042,7 +1042,7 @@ int damage;
         set_heros_fault(cloud); /* assume player has created it */
     cloud->inside_f = INSIDE_GAS_CLOUD;
     cloud->expire_f = EXPIRE_GAS_CLOUD;
-    cloud->arg = zeroany;
+    cloud->arg = g.zeroany;
     cloud->arg.a_int = damage;
     cloud->visible = TRUE;
     cloud->glyph = cmap_to_glyph(damage ? S_poisoncloud : S_cloud);
diff --git a/src/restore.c b/src/restore.c
index 261e7ddb2..92dd89421 100644
--- a/src/restore.c
+++ b/src/restore.c
@@ -1333,7 +1333,7 @@ winid bannerwin; /* if not WIN_ERR, clear window and show copyright in menu */
     if (saved && *saved) {
         tmpwin = create_nhwindow(NHW_MENU);
         start_menu(tmpwin);
-        any = zeroany; /* no selection */
+        any = g.zeroany; /* no selection */
         if (bannerwin != WIN_ERR) {
             /* for tty; erase copyright notice and redo it in the menu */
             clear_nhwindow(bannerwin);
diff --git a/src/role.c b/src/role.c
index 6d162c2c0..1e3465d62 100644
--- a/src/role.c
+++ b/src/role.c
@@ -1951,7 +1951,7 @@ boolean preselect;
         break;
     }
 
-    any = zeroany; /* zero out all bits */
+    any = g.zeroany; /* zero out all bits */
     if (constrainer) {
         any.a_int = 0;
         /* use four spaces of padding to fake a grayed out menu choice */
diff --git a/src/spell.c b/src/spell.c
index a9db647bf..41511b0fa 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -1497,7 +1497,7 @@ spellsortmenu()
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany; /* zero out all bits */
+    any = g.zeroany; /* zero out all bits */
 
     for (i = 0; i < SIZE(spl_sortchoices); i++) {
         if (i == SORTRETAINORDER) {
@@ -1580,7 +1580,7 @@ int *spell_no;
 
     tmpwin = create_nhwindow(NHW_MENU);
     start_menu(tmpwin);
-    any = zeroany; /* zero out all bits */
+    any = g.zeroany; /* zero out all bits */
 
     /*
      * The correct spacing of the columns when not using
diff --git a/src/teleport.c b/src/teleport.c
index a00745668..ec3b822c2 100644
--- a/src/teleport.c
+++ b/src/teleport.c
@@ -129,7 +129,7 @@ unsigned entflags;
         /* default to player's original monster type */
         mdat = &mons[u.umonster];
     }
-    fakemon = zeromonst;
+    fakemon = g.zeromonst;
     set_mon_data(&fakemon, mdat, -1); /* set up for goodpos */
 
     good_ptr = good;
diff --git a/src/timeout.c b/src/timeout.c
index ee3bac5d7..76ffcba03 100644
--- a/src/timeout.c
+++ b/src/timeout.c
@@ -2105,7 +2105,7 @@ timer_element *timer;
 {
     anything arg_save;
 
-    arg_save = zeroany;
+    arg_save = g.zeroany;
     switch (timer->kind) {
     case TIMER_GLOBAL:
     case TIMER_LEVEL:
@@ -2119,7 +2119,7 @@ timer_element *timer;
         else {
             /* replace object pointer with id */
             arg_save.a_obj = timer->arg.a_obj;
-            timer->arg = zeroany;
+            timer->arg = g.zeroany;
             timer->arg.a_uint = (arg_save.a_obj)->o_id;
             timer->needs_fixup = 1;
             bwrite(fd, (genericptr_t) timer, sizeof(timer_element));
@@ -2134,7 +2134,7 @@ timer_element *timer;
         else {
             /* replace monster pointer with id */
             arg_save.a_monst = timer->arg.a_monst;
-            timer->arg = zeroany;
+            timer->arg = g.zeroany;
             timer->arg.a_uint = (arg_save.a_monst)->m_id;
             timer->needs_fixup = 1;
             bwrite(fd, (genericptr_t) timer, sizeof(timer_element));
diff --git a/src/trap.c b/src/trap.c
index 1762b3420..3de6b5aad 100644
--- a/src/trap.c
+++ b/src/trap.c
@@ -3260,7 +3260,7 @@ domagictrap()
             struct obj pseudo;
             long save_conf = HConfusion;
 
-            pseudo = zeroobj; /* neither cursed nor blessed,
+            pseudo = g.zeroobj; /* neither cursed nor blessed,
                                  and zero out oextra */
             pseudo.otyp = SCR_REMOVE_CURSE;
             HConfusion = 0L;
diff --git a/src/weapon.c b/src/weapon.c
index e8bc49133..4b353469b 100644
--- a/src/weapon.c
+++ b/src/weapon.c
@@ -399,7 +399,7 @@ register struct monst *mtmp;
 
     char mlet = mtmp->data->mlet;
 
-    g.propellor = &zeroobj;
+    g.propellor = &g.zeroobj;
     Oselect(EGG);      /* cockatrice egg */
     if (mlet == S_KOP) /* pies are first choice for Kops */
         Oselect(CREAM_PIE);
@@ -458,7 +458,7 @@ register struct monst *mtmp;
         }
 
         /* KMH -- This belongs here so darts will work */
-        g.propellor = &zeroobj;
+        g.propellor = &g.zeroobj;
 
         prop = (objects[rwep[i]]).oc_skill;
         if (prop < 0) {
@@ -483,7 +483,7 @@ register struct monst *mtmp;
                 g.propellor = 0;
         }
         /* propellor = obj, propellor to use
-         * propellor = &zeroobj, doesn't need a propellor
+         * propellor = &g.zeroobj, doesn't need a propellor
          * propellor = 0, needed one and didn't have one
          */
         if (g.propellor != 0) {
@@ -663,7 +663,7 @@ register struct monst *mon;
                    mon_nam(mon));
         return 0;
     }
-    if (obj && obj != &zeroobj) {
+    if (obj && obj != &g.zeroobj) {
         struct obj *mw_tmp = MON_WEP(mon);
         if (mw_tmp && mw_tmp->otyp == obj->otyp) {
             /* already wielding it */
@@ -1045,7 +1045,7 @@ enhance_weapon_skill()
         /* start with a legend if any entries will be annotated
            with "*" or "#" below */
         if (eventually_advance > 0 || maxxed_cnt > 0) {
-            any = zeroany;
+            any = g.zeroany;
             if (eventually_advance > 0) {
                 Sprintf(buf, "(Skill%s flagged by \"*\" may be enhanced %s.)",
                         plur(eventually_advance),
@@ -1074,7 +1074,7 @@ enhance_weapon_skill()
             for (i = skill_ranges[pass].first; i <= skill_ranges[pass].last;
                  i++) {
                 /* Print headings for skill types */
-                any = zeroany;
+                any = g.zeroany;
                 if (i == skill_ranges[pass].first)
                     add_menu(win, NO_GLYPH, &any, 0, 0, iflags.menu_headings,
                              skill_ranges[pass].name, MENU_UNSELECTED);
diff --git a/src/wield.c b/src/wield.c
index 0fbdfaf57..fbb323ef2 100644
--- a/src/wield.c
+++ b/src/wield.c
@@ -74,7 +74,7 @@ STATIC_DCL int FDECL(ready_weapon, (struct obj *));
  *     functions can be used to put the remainder back in the slot.
  * 4.  Putting an item that was thrown and returned back into the slot.
  * 5.  Emptying the slot, by passing a null object.  NEVER pass
- *     zeroobj!
+ *     g.zeroobj!
  *
  * If the item is being moved from another slot, it is the caller's
  * responsibility to handle that.  It's also the caller's responsibility
@@ -285,7 +285,7 @@ dowield()
     }
 
     /* Handle no object, or object in other slot */
-    if (wep == &zeroobj)
+    if (wep == &g.zeroobj)
         wep = (struct obj *) 0;
     else if (wep == uswapwep)
         return doswapweapon();
@@ -378,7 +378,7 @@ dowieldquiver()
     if (!newquiver) {
         /* Cancelled */
         return 0;
-    } else if (newquiver == &zeroobj) { /* no object */
+    } else if (newquiver == &g.zeroobj) { /* no object */
         /* Explicitly nothing */
         if (uquiver) {
             You("now have no ammunition readied.");
diff --git a/src/zap.c b/src/zap.c
index 94083e639..a6ff212a0 100644
--- a/src/zap.c
+++ b/src/zap.c
@@ -5208,7 +5208,7 @@ makewish()
     int tries = 0;
 
     promptbuf[0] = '\0';
-    nothing = zeroobj; /* lint suppression; only its address matters */
+    nothing = g.zeroobj; /* lint suppression; only its address matters */
     if (flags.verbose)
         You("may wish for an object.");
 retry:
@@ -5226,7 +5226,7 @@ retry:
     }
     /*
      *  Note: if they wished for and got a non-object successfully,
-     *  otmp == &zeroobj.  That includes gold, or an artifact that
+     *  otmp == &g.zeroobj.  That includes gold, or an artifact that
      *  has been denied.  Wishing for "nothing" requires a separate
      *  value to remain distinct.
      */
@@ -5248,7 +5248,7 @@ retry:
     /* KMH, conduct */
     u.uconduct.wishes++;
 
-    if (otmp != &zeroobj) {
+    if (otmp != &g.zeroobj) {
         const char
             *verb = ((Is_airlevel(&u.uz) || u.uinwater) ? "slip" : "drop"),
             *oops_msg = (u.uswallow
diff --git a/sys/winnt/windmain.c b/sys/winnt/windmain.c
index dbf0ae0a1..959005d62 100644
--- a/sys/winnt/windmain.c
+++ b/sys/winnt/windmain.c
@@ -162,22 +162,22 @@ _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);*/
 
         (void) strncpy(g.hackdir, dir, PATHLEN - 1);
         g.hackdir[PATHLEN - 1] = '\0';
-        fqn_prefix[0] = (char *) alloc(strlen(g.hackdir) + 2);
-        Strcpy(fqn_prefix[0], g.hackdir);
-        append_slash(fqn_prefix[0]);
+        g.fqn_prefix[0] = (char *) alloc(strlen(g.hackdir) + 2);
+        Strcpy(g.fqn_prefix[0], g.hackdir);
+        append_slash(g.fqn_prefix[0]);
         for (prefcnt = 1; prefcnt < PREFIX_COUNT; prefcnt++)
-             fqn_prefix[prefcnt] = fqn_prefix[0];
+             g.fqn_prefix[prefcnt] = g.fqn_prefix[0];
         /* sysconf should be searched for in this location */
         envp = nh_getenv("COMMONPROGRAMFILES");
         if (envp) {
             if ((sptr = index(envp, ';')) != 0)
                 *sptr = '\0';
             if (strlen(envp) > 0) {
-                fqn_prefix[SYSCONFPREFIX] =
+                g.fqn_prefix[SYSCONFPREFIX] =
                     (char *) alloc(strlen(envp) + 10);
-                Strcpy(fqn_prefix[SYSCONFPREFIX], envp);
-                append_slash(fqn_prefix[SYSCONFPREFIX]);
-                Strcat(fqn_prefix[SYSCONFPREFIX], "NetHack\\");
+                Strcpy(g.fqn_prefix[SYSCONFPREFIX], envp);
+                append_slash(g.fqn_prefix[SYSCONFPREFIX]);
+                Strcat(g.fqn_prefix[SYSCONFPREFIX], "NetHack\\");
             }
         }
 
@@ -198,7 +198,7 @@ _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);*/
             /* No SYSCF_FILE where there should be one, and
                without an installer, a user may not be able
                to place one there. So, let's try somewhere else... */
-             fqn_prefix[SYSCONFPREFIX] = fqn_prefix[0];
+             g.fqn_prefix[SYSCONFPREFIX] = g.fqn_prefix[0];
 
             /* Is there a SYSCF_FILE there? */
             fd = open(fqname(SYSCF_FILE, SYSCONFPREFIX, 0), O_RDONLY);
@@ -216,10 +216,10 @@ _CrtSetReportFile(_CRT_ASSERT, _CRTDBG_FILE_STDERR);*/
             if ((sptr = index(envp, ';')) != 0)
                 *sptr = '\0';
             if (strlen(envp) > 0) {
-                fqn_prefix[CONFIGPREFIX] =
+                g.fqn_prefix[CONFIGPREFIX] =
                     (char *) alloc(strlen(envp) + 2);
-                Strcpy(fqn_prefix[CONFIGPREFIX], envp);
-                append_slash(fqn_prefix[CONFIGPREFIX]);
+                Strcpy(g.fqn_prefix[CONFIGPREFIX], envp);
+                append_slash(g.fqn_prefix[CONFIGPREFIX]);
             }
         }
     }
@@ -900,7 +900,7 @@ gotlock:
 #endif
         Sprintf(oops, "cannot creat file (%s.)\n%s\n%s\"%s\" exists?\n", fq_lock,
               strerror(ern), " Are you sure that the directory",
-              fqn_prefix[LEVELPREFIX]);
+              g.fqn_prefix[LEVELPREFIX]);
         raw_print(oops);
     } else {
         if (write(fd, (char *) &g.hackpid, sizeof(g.hackpid))
diff --git a/win/tty/wintty.c b/win/tty/wintty.c
index bacea857a..57b4c7399 100644
--- a/win/tty/wintty.c
+++ b/win/tty/wintty.c
@@ -524,7 +524,7 @@ makepicks:
                     setup_rolemenu(win, TRUE, RACE, GEND, ALGN);
                     /* add miscellaneous menu entries */
                     role_menu_extra(ROLE_RANDOM, win, TRUE);
-                    any = zeroany; /* separator, not a choice */
+                    any = g.zeroany; /* separator, not a choice */
                     add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE, "",
                              MENU_UNSELECTED);
                     role_menu_extra(RS_RACE, win, FALSE);
@@ -618,7 +618,7 @@ makepicks:
                         role_selection_prolog(RS_RACE, BASE_WINDOW);
                         win = create_nhwindow(NHW_MENU);
                         start_menu(win);
-                        any = zeroany; /* zero out all bits */
+                        any = g.zeroany; /* zero out all bits */
                         /* populate the menu with role choices */
                         setup_racemenu(win, TRUE, ROLE, GEND, ALGN);
                         /* add miscellaneous menu entries */
@@ -711,7 +711,7 @@ makepicks:
                         role_selection_prolog(RS_GENDER, BASE_WINDOW);
                         win = create_nhwindow(NHW_MENU);
                         start_menu(win);
-                        any = zeroany; /* zero out all bits */
+                        any = g.zeroany; /* zero out all bits */
                         /* populate the menu with gender choices */
                         setup_gendmenu(win, TRUE, ROLE, RACE, ALGN);
                         /* add miscellaneous menu entries */
@@ -802,7 +802,7 @@ makepicks:
                         role_selection_prolog(RS_ALGNMNT, BASE_WINDOW);
                         win = create_nhwindow(NHW_MENU);
                         start_menu(win);
-                        any = zeroany; /* zero out all bits */
+                        any = g.zeroany; /* zero out all bits */
                         setup_algnmenu(win, TRUE, ROLE, RACE, GEND);
                         role_menu_extra(ROLE_RANDOM, win, TRUE);
                         any.a_int = 0; /* separator, not a choice */
@@ -882,7 +882,7 @@ makepicks:
         role_selection_prolog(ROLE_NONE, BASE_WINDOW);
         win = create_nhwindow(NHW_MENU);
         start_menu(win);
-        any = zeroany; /* zero out all bits */
+        any = g.zeroany; /* zero out all bits */
         any.a_int = 0;
         if (!roles[ROLE].name.f
             && (roles[ROLE].allow & ROLE_GENDMASK)
@@ -984,7 +984,7 @@ reset_role_filtering()
 
     win = create_nhwindow(NHW_MENU);
     start_menu(win);
-    any = zeroany;
+    any = g.zeroany;
 
     /* no extra blank line preceding this entry; end_menu supplies one */
     add_menu(win, NO_GLYPH, &any, 0, 0, ATR_NONE,
@@ -1039,7 +1039,7 @@ int race, gend, algn; /* all ROLE_NONE for !filtering case */
     boolean role_ok;
     char thisch, lastch = '\0', rolenamebuf[50];
 
-    any = zeroany; /* zero out all bits */
+    any = g.zeroany; /* zero out all bits */
     for (i = 0; roles[i].name.m; i++) {
         role_ok = ok_role(i, race, gend, algn);
         if (filtering && !role_ok)
@@ -1082,7 +1082,7 @@ int role, gend, algn;
     int i;
     char this_ch;
 
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; races[i].noun; i++) {
         race_ok = ok_race(role, i, gend, algn);
         if (filtering && !race_ok)
@@ -1115,7 +1115,7 @@ int role, race, algn;
     int i;
     char this_ch;
 
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < ROLE_GENDERS; i++) {
         gend_ok = ok_gend(role, race, i, algn);
         if (filtering && !gend_ok)
@@ -1146,7 +1146,7 @@ int role, race, gend;
     int i;
     char this_ch;
 
-    any = zeroany;
+    any = g.zeroany;
     for (i = 0; i < ROLE_ALIGNS; i++) {
         algn_ok = ok_align(role, race, gend, i);
         if (filtering && !algn_ok)
@@ -2901,7 +2901,7 @@ const char *prompt; /* prompt to for menu */
     if (prompt) {
         anything any;
 
-        any = zeroany; /* not selectable */
+        any = g.zeroany; /* not selectable */
         tty_add_menu(window, NO_GLYPH, &any, 0, 0, ATR_NONE, "",
                      MENU_UNSELECTED);
         tty_add_menu(window, NO_GLYPH, &any, 0, 0, ATR_NONE, prompt,
diff --git a/win/win32/mswproc.c b/win/win32/mswproc.c
index 4973c0d18..c8ebe8be4 100644
--- a/win/win32/mswproc.c
+++ b/win/win32/mswproc.c
@@ -403,7 +403,7 @@ prompt_for_player_selection(void)
             /* Prompt for a role */
             win = create_nhwindow(NHW_MENU);
             start_menu(win);
-            any = zeroany; /* zero out all bits */
+            any = g.zeroany; /* zero out all bits */
             for (i = 0; roles[i].name.m; i++) {
                 if (ok_role(i, flags.initrace, flags.initgend,
                             flags.initalign)) {
@@ -495,7 +495,7 @@ prompt_for_player_selection(void)
                 /* tty_putstr(BASE_WINDOW, 0, "Choosing Race"); */
                 win = create_nhwindow(NHW_MENU);
                 start_menu(win);
-                any = zeroany; /* zero out all bits */
+                any = g.zeroany; /* zero out all bits */
                 for (i = 0; races[i].noun; i++)
                     if (ok_race(flags.initrole, i, flags.initgend,
                                 flags.initalign)) {
@@ -569,7 +569,7 @@ prompt_for_player_selection(void)
                 /* tty_putstr(BASE_WINDOW, 0, "Choosing Gender"); */
                 win = create_nhwindow(NHW_MENU);
                 start_menu(win);
-                any = zeroany; /* zero out all bits */
+                any = g.zeroany; /* zero out all bits */
                 for (i = 0; i < ROLE_GENDERS; i++)
                     if (ok_gend(flags.initrole, flags.initrace, i,
                                 flags.initalign)) {
@@ -642,7 +642,7 @@ prompt_for_player_selection(void)
                 /* tty_putstr(BASE_WINDOW, 0, "Choosing Alignment"); */
                 win = create_nhwindow(NHW_MENU);
                 start_menu(win);
-                any = zeroany; /* zero out all bits */
+                any = g.zeroany; /* zero out all bits */
                 for (i = 0; i < ROLE_ALIGNS; i++)
                     if (ok_align(flags.initrole, flags.initrace,
                                  flags.initgend, i)) {