diff --git a/code/_helpers/events.dm b/code/_helpers/events.dm
index d2c3715e0a..c073306f60 100644
--- a/code/_helpers/events.dm
+++ b/code/_helpers/events.dm
@@ -2,7 +2,7 @@
 	var/list/area/grand_list_of_areas = list()
 	// Assemble areas that all exists (See DM reference if you are confused about loop labels)
 	looping_station_areas:
-		for(var/parentpath in global.the_station_areas)
+		for(var/parentpath in GLOB.the_station_areas)
 			// Check its not excluded
 			for(var/excluded_path in excluded_areas)
 				if(ispath(parentpath, excluded_path))
diff --git a/code/controllers/subsystems/ticker.dm b/code/controllers/subsystems/ticker.dm
index cb0c008eff..8af232ee44 100644
--- a/code/controllers/subsystems/ticker.dm
+++ b/code/controllers/subsystems/ticker.dm
@@ -221,11 +221,10 @@ SUBSYSTEM_DEF(ticker)
 	SSwebhooks.send(WEBHOOK_ROUNDSTART, list("url" = get_world_url()))
 
 	// Spawn randomized items
-	for(var/id in multi_point_spawns)
-		var/list/spawn_points = multi_point_spawns[id]
-		var/obj/random_multi/rm = pickweight(spawn_points)
+	for(var/id, value in GLOB.multi_point_spawns)
+		var/obj/random_multi/rm = pickweight(value)
 		rm.generate_items()
-		for(var/entry in spawn_points)
+		for(var/entry in value)
 			qdel(entry)
 
 	// Place empty AI cores once we know who is playing AI
diff --git a/code/game/antagonist/antagonist_factions.dm b/code/game/antagonist/antagonist_factions.dm
index d106e7cd8b..d145764782 100644
--- a/code/game/antagonist/antagonist_factions.dm
+++ b/code/game/antagonist/antagonist_factions.dm
@@ -3,7 +3,7 @@
 	set category = "Abilities.Antag"
 	if(!M.mind)
 		return
-	convert_to_faction(M.mind, revs)
+	convert_to_faction(M.mind, GLOB.revs)
 
 /mob/living/proc/convert_to_faction(var/datum/mind/player, var/datum/antagonist/faction)
 
diff --git a/code/game/antagonist/outsider/technomancer.dm b/code/game/antagonist/outsider/technomancer.dm
index 87c72b83b6..232ef3b0b7 100644
--- a/code/game/antagonist/outsider/technomancer.dm
+++ b/code/game/antagonist/outsider/technomancer.dm
@@ -44,7 +44,7 @@ GLOBAL_DATUM(technomancers, /datum/antagonist/technomancer)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/radio/headset(technomancer_mob), slot_l_ear)
 	var/obj/item/technomancer_core/core = new /obj/item/technomancer_core(technomancer_mob)
 	technomancer_mob.equip_to_slot_or_del(core, slot_back)
-	technomancer_belongings.Add(core) // So it can be Tracked.
+	GLOB.technomancer_belongings.Add(core) // So it can be Tracked.
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/flashlight(technomancer_mob), slot_belt)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/shoes/laceup(technomancer_mob), slot_shoes)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/head/technomancer/master(technomancer_mob), slot_head)
@@ -63,7 +63,7 @@ GLOBAL_DATUM(technomancers, /datum/antagonist/technomancer)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/radio/headset(technomancer_mob), slot_l_ear)
 	var/obj/item/technomancer_core/core = new /obj/item/technomancer_core(technomancer_mob)
 	technomancer_mob.equip_to_slot_or_del(core, slot_back)
-	technomancer_belongings.Add(core) // So it can be Tracked.
+	GLOB.technomancer_belongings.Add(core) // So it can be Tracked.
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/flashlight(technomancer_mob), slot_belt)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/shoes/laceup(technomancer_mob), slot_shoes)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/head/technomancer/apprentice(technomancer_mob), slot_head)
@@ -82,7 +82,7 @@ GLOBAL_DATUM(technomancers, /datum/antagonist/technomancer)
 
 /datum/antagonist/technomancer/print_player_summary()
 	..()
-	for(var/obj/item/technomancer_core/core in technomancer_belongings)
+	for(var/obj/item/technomancer_core/core in GLOB.technomancer_belongings)
 		if(core.wearer)
 			continue // Only want abandoned cores.
 		if(!core.spells.len)
diff --git a/code/game/antagonist/station/revolutionary.dm b/code/game/antagonist/station/revolutionary.dm
index dd73c5ad2f..1836b0bf46 100644
--- a/code/game/antagonist/station/revolutionary.dm
+++ b/code/game/antagonist/station/revolutionary.dm
@@ -1,4 +1,4 @@
-var/datum/antagonist/revolutionary/revs
+GLOBAL_DATUM(revs, /datum/antagonist/revolutionary)
 
 /datum/antagonist/revolutionary
 	id = MODE_REVOLUTIONARY
@@ -35,7 +35,7 @@ var/datum/antagonist/revolutionary/revs
 
 /datum/antagonist/revolutionary/New()
 	..()
-	revs = src
+	GLOB.revs = src
 
 /datum/antagonist/revolutionary/create_global_objectives()
 	if(!..())
diff --git a/code/game/area/Space Station 13 areas.dm b/code/game/area/Space Station 13 areas.dm
index 1fa44d159b..60fed62437 100755
--- a/code/game/area/Space Station 13 areas.dm	
+++ b/code/game/area/Space Station 13 areas.dm	
@@ -2609,7 +2609,7 @@ NOTE: there are two lists of areas in the end of this file: centcom and station
 */
 
 // CENTCOM
-var/list/centcom_areas = list (
+GLOBAL_LIST_INIT(centcom_areas, list(
 	/area/centcom,
 	/area/shuttle/escape/centcom,
 	/area/shuttle/escape_pod1/centcom,
@@ -2619,10 +2619,10 @@ var/list/centcom_areas = list (
 	/area/shuttle/transport1/centcom,
 	/area/shuttle/administration/centcom,
 	/area/shuttle/specops/centcom,
-)
+))
 
 //SPACE STATION 13
-var/list/the_station_areas = list (
+GLOBAL_LIST_INIT(the_station_areas, list(
 	/area/shuttle/arrival,
 	/area/shuttle/escape/station,
 	/area/shuttle/escape_pod1/station,
@@ -2662,7 +2662,7 @@ var/list/the_station_areas = list (
 	/area/ai_upload,
 	/area/ai_upload_foyer,
 	/area/ai
-)
+))
 
 
 
diff --git a/code/game/gamemodes/nuclear/nuclear.dm b/code/game/gamemodes/nuclear/nuclear.dm
index 52ddba0123..db33e2ed95 100644
--- a/code/game/gamemodes/nuclear/nuclear.dm
+++ b/code/game/gamemodes/nuclear/nuclear.dm
@@ -38,7 +38,7 @@ GLOBAL_LIST_EMPTY(nuke_disks)
 	var/disk_rescued = 1
 	for(var/obj/item/disk/nuclear/D in GLOB.nuke_disks)
 		var/disk_area = get_area(D)
-		if(!is_type_in_list(disk_area, centcom_areas))
+		if(!is_type_in_list(disk_area, GLOB.centcom_areas))
 			disk_rescued = 0
 			break
 	var/crew_evacuated = (emergency_shuttle.returned())
diff --git a/code/game/gamemodes/objective.dm b/code/game/gamemodes/objective.dm
index dd3dc10da9..4071af1c4d 100644
--- a/code/game/gamemodes/objective.dm
+++ b/code/game/gamemodes/objective.dm
@@ -808,7 +808,7 @@ GLOBAL_LIST_EMPTY(all_objectives)
 	for(var/datum/mind/cult_mind in cult.current_antagonists)
 		if (cult_mind.current && cult_mind.current.stat!=2)
 			var/area/A = get_area(cult_mind.current )
-			if ( is_type_in_list(A, centcom_areas))
+			if ( is_type_in_list(A, GLOB.centcom_areas))
 				acolytes_survived++
 	if(acolytes_survived >= target_amount)
 		return 0
@@ -863,7 +863,7 @@ GLOBAL_LIST_EMPTY(all_objectives)
 		if(H.stat == DEAD || H.restrained())
 			return 1
 		// Check if they're converted
-		if(target in revs.current_antagonists)
+		if(target in GLOB.revs.current_antagonists)
 			return 1
 		var/turf/T = get_turf(H)
 		if(T && isNotStationLevel(T.z))			//If they leave the station they count as dead for this
diff --git a/code/game/gamemodes/technomancer/catalog.dm b/code/game/gamemodes/technomancer/catalog.dm
index da07fa16e1..c5e69d3ab9 100644
--- a/code/game/gamemodes/technomancer/catalog.dm
+++ b/code/game/gamemodes/technomancer/catalog.dm
@@ -1,9 +1,9 @@
 #define ALL_SPELLS "All"
 
-var/list/all_technomancer_spells = subtypesof(/datum/technomancer/spell)
-var/list/all_technomancer_equipment = subtypesof(/datum/technomancer/equipment)
-var/list/all_technomancer_consumables = subtypesof(/datum/technomancer/consumable)
-var/list/all_technomancer_assistance = subtypesof(/datum/technomancer/assistance)
+GLOBAL_LIST_INIT(all_technomancer_spells, subtypesof(/datum/technomancer/spell))
+GLOBAL_LIST_INIT(all_technomancer_equipment, subtypesof(/datum/technomancer/equipment))
+GLOBAL_LIST_INIT(all_technomancer_consumables, subtypesof(/datum/technomancer/consumable))
+GLOBAL_LIST_INIT(all_technomancer_assistance, subtypesof(/datum/technomancer/assistance))
 
 /datum/technomancer
 	var/name = "technomancer thing"
@@ -78,16 +78,16 @@ var/list/all_technomancer_assistance = subtypesof(/datum/technomancer/assistance
 // Description: Instantiates all the catalog datums for everything that can be bought.
 /obj/item/technomancer_catalog/proc/set_up()
 	if(!spell_instances.len)
-		for(var/S in all_technomancer_spells)
+		for(var/S in GLOB.all_technomancer_spells)
 			spell_instances += new S()
 	if(!equipment_instances.len)
-		for(var/E in all_technomancer_equipment)
+		for(var/E in GLOB.all_technomancer_equipment)
 			equipment_instances += new E()
 	if(!consumable_instances.len)
-		for(var/C in all_technomancer_consumables)
+		for(var/C in GLOB.all_technomancer_consumables)
 			consumable_instances += new C()
 	if(!assistance_instances.len)
-		for(var/A in all_technomancer_assistance)
+		for(var/A in GLOB.all_technomancer_assistance)
 			assistance_instances += new A()
 
 /obj/item/technomancer_catalog/apprentice/set_up()
@@ -333,7 +333,7 @@ var/list/all_technomancer_assistance = subtypesof(/datum/technomancer/assistance
 					budget -= desired_object.cost
 					to_chat(H, span_notice("You have just bought \a [desired_object.name]."))
 					var/obj/O = new desired_object.obj_path(get_turf(H))
-					technomancer_belongings.Add(O) // Used for the Track spell.
+					GLOB.technomancer_belongings.Add(O) // Used for the Track spell.
 
 				else //Can't afford.
 					to_chat(H, span_danger("You can't afford that!"))
diff --git a/code/game/gamemodes/technomancer/spells/track.dm b/code/game/gamemodes/technomancer/spells/track.dm
index bac6b2d17d..6920e841d2 100644
--- a/code/game/gamemodes/technomancer/spells/track.dm
+++ b/code/game/gamemodes/technomancer/spells/track.dm
@@ -10,7 +10,7 @@
 
 // This stores a ref to all important items that belong to a Technomancer, in case of theft.  Used by the spell below.
 // I feel dirty for adding yet another global list used by one thing, but the only alternative is to loop through world, and yeahhh.
-var/list/technomancer_belongings = list()
+GLOBAL_LIST_EMPTY(technomancer_belongings)
 
 /obj/item/spell/track
 	name = "track"
@@ -34,7 +34,7 @@ var/list/technomancer_belongings = list()
 		return
 
 	var/can_track_non_allies = 0
-	var/list/object_choices = technomancer_belongings.Copy()
+	var/list/object_choices = GLOB.technomancer_belongings.Copy()
 	if(check_for_scepter())
 		can_track_non_allies = 1
 	var/list/mob_choices = list()
diff --git a/code/game/machinery/status_display_ai.dm b/code/game/machinery/status_display_ai.dm
index c6fdd555dd..8987a99ca2 100644
--- a/code/game/machinery/status_display_ai.dm
+++ b/code/game/machinery/status_display_ai.dm
@@ -6,7 +6,7 @@
 	overlay = over
 	ckey = key
 
-var/list/ai_status_emotions = list(
+GLOBAL_LIST_INIT(ai_status_emotions, list(
 	"Very Happy" 				= new /datum/ai_emotion("ai_veryhappy"),
 	"Happy" 					= new /datum/ai_emotion("ai_happy"),
 	"Neutral" 					= new /datum/ai_emotion("ai_neutral"),
@@ -28,12 +28,12 @@ var/list/ai_status_emotions = list(
 	"Heart" 					= new /datum/ai_emotion("ai_heart"),
 	"Tribunal" 					= new /datum/ai_emotion("ai_tribunal", "serithi"),
 	"Tribunal Malfunctioning"	= new /datum/ai_emotion("ai_tribunal_malf", "serithi")
-	)
+	))
 
 /proc/get_ai_emotions(var/ckey)
 	var/list/emotions = list()
-	for(var/emotion_name in ai_status_emotions)
-		var/datum/ai_emotion/emotion = ai_status_emotions[emotion_name]
+	for(var/emotion_name in GLOB.ai_status_emotions)
+		var/datum/ai_emotion/emotion = GLOB.ai_status_emotions[emotion_name]
 		if(!emotion.ckey || emotion.ckey == ckey)
 			emotions += emotion_name
 
@@ -98,7 +98,7 @@ var/list/ai_status_emotions = list(
 		return
 
 	if(mode==1)	// AI emoticon
-		var/datum/ai_emotion/ai_emotion = ai_status_emotions[emotion]
+		var/datum/ai_emotion/ai_emotion = GLOB.ai_status_emotions[emotion]
 		set_picture(ai_emotion.overlay)
 		return
 
diff --git a/code/game/magic/Uristrunes.dm b/code/game/magic/Uristrunes.dm
index 7e38121aeb..9c96bf56f1 100644
--- a/code/game/magic/Uristrunes.dm
+++ b/code/game/magic/Uristrunes.dm
@@ -55,14 +55,13 @@ GLOBAL_LIST(word_to_uristrune_table)
 
 	return get_uristrune(bits, animated)
 
-
-var/list/uristrune_cache = list()
+GLOBAL_LIST_EMPTY(uristrune_cache)
 
 /proc/get_uristrune(symbol_bits, animated = 0)
 	var/lookup = "[symbol_bits]-[animated]"
 
-	if(lookup in uristrune_cache)
-		return uristrune_cache[lookup]
+	if(lookup in GLOB.uristrune_cache)
+		return GLOB.uristrune_cache[lookup]
 
 	var/icon/I = icon('icons/effects/uristrunes.dmi', "blank")
 
@@ -125,6 +124,6 @@ var/list/uristrune_cache = list()
 		result.Insert(I3, "", frame = 7, delay = 2)
 		result.Insert(I2, "", frame = 8, delay = 2)
 
-	uristrune_cache[lookup] = result
+	GLOB.uristrune_cache[lookup] = result
 
 	return result
diff --git a/code/game/magic/archived_book.dm b/code/game/magic/archived_book.dm
index 38bf310c0f..ad0e3322b0 100644
--- a/code/game/magic/archived_book.dm
+++ b/code/game/magic/archived_book.dm
@@ -4,7 +4,7 @@
 #define BOOK_VERSION_MAX	2
 #define BOOK_PATH			"data/books/"
 
-var/global/datum/book_manager/book_mgr = new()
+GLOBAL_DATUM_INIT(book_mgr, /datum/book_manager, new)
 
 /datum/book_manager/proc/path(id)
 	if(isnum(id)) // kill any path exploits
@@ -131,7 +131,7 @@ var/global/datum/book_manager/book_mgr = new()
 
 
 /datum/archived_book/proc/save()
-	var/savefile/F = new(book_mgr.path(id))
+	var/savefile/F = new(GLOB.book_mgr.path(id))
 
 	F["version"] << BOOK_VERSION_MAX
 	F["author"] << author
diff --git a/code/game/objects/effects/effect_system.dm b/code/game/objects/effects/effect_system.dm
index 46a8b93932..9228ead42d 100644
--- a/code/game/objects/effects/effect_system.dm
+++ b/code/game/objects/effects/effect_system.dm
@@ -50,12 +50,12 @@ would spawn and follow the beaker, even if it is carried or thrown.
 // to something, like a smoking beaker, so then you can just call start() and the steam
 // will always spawn at the items location, even if it's moved.
 
-/* Example:
-var/datum/effect/system/steam_spread/steam = new /datum/effect/system/steam_spread() -- creates new system
-steam.set_up(5, 0, mob.loc) -- sets up variables
-OPTIONAL: steam.attach(mob)
-steam.start() -- spawns the effect
-*/
+/** Example:
+ * var/datum/effect/system/steam_spread/steam = new /datum/effect/system/steam_spread() -- creates new system
+ * steam.set_up(5, 0, mob.loc) -- sets up variables
+ * OPTIONAL: steam.attach(mob)
+ * steam.start() -- spawns the effect
+ **/
 /////////////////////////////////////////////
 /obj/effect/effect/steam
 	name = "steam"
diff --git a/code/game/objects/items/stacks/marker_beacons.dm b/code/game/objects/items/stacks/marker_beacons.dm
index e97f48ccd5..1a52568531 100644
--- a/code/game/objects/items/stacks/marker_beacons.dm
+++ b/code/game/objects/items/stacks/marker_beacons.dm
@@ -1,18 +1,18 @@
 /*****************Marker Beacons**************************/
-var/list/marker_beacon_colors = list(
-"Burgundy" = LIGHT_COLOR_FLARE,
-"Bronze" = LIGHT_COLOR_ORANGE,
-"Yellow" = LIGHT_COLOR_YELLOW,
-"Lime" = LIGHT_COLOR_SLIME_LAMP,
-"Olive" = LIGHT_COLOR_GREEN,
-"Jade" = LIGHT_COLOR_BLUEGREEN,
-"Teal" = LIGHT_COLOR_LIGHT_CYAN,
-"Cerulean" = LIGHT_COLOR_BLUE,
-"Indigo" = LIGHT_COLOR_DARK_BLUE,
-"Purple" = LIGHT_COLOR_PURPLE,
-"Violet" = LIGHT_COLOR_LAVENDER,
-"Fuchsia" = LIGHT_COLOR_PINK
-)
+GLOBAL_LIST_INIT(marker_beacon_colors, list(
+	"Burgundy" = LIGHT_COLOR_FLARE,
+	"Bronze" = LIGHT_COLOR_ORANGE,
+	"Yellow" = LIGHT_COLOR_YELLOW,
+	"Lime" = LIGHT_COLOR_SLIME_LAMP,
+	"Olive" = LIGHT_COLOR_GREEN,
+	"Jade" = LIGHT_COLOR_BLUEGREEN,
+	"Teal" = LIGHT_COLOR_LIGHT_CYAN,
+	"Cerulean" = LIGHT_COLOR_BLUE,
+	"Indigo" = LIGHT_COLOR_DARK_BLUE,
+	"Purple" = LIGHT_COLOR_PURPLE,
+	"Violet" = LIGHT_COLOR_LAVENDER,
+	"Fuchsia" = LIGHT_COLOR_PINK
+))
 
 /obj/item/stack/marker_beacon
 	name = "marker beacons"
@@ -73,7 +73,7 @@ var/list/marker_beacon_colors = list(
 	if(!in_range(src, user))
 		return
 
-	var/options = marker_beacon_colors.Copy()
+	var/options = GLOB.marker_beacon_colors.Copy()
 	options += list("Random" = FALSE) //not a true color, will pick a random color
 	var/input_color = tgui_input_list(user, "Choose a color.", "Beacon Color", options)
 	if(user.incapacitated() || !istype(user) || !in_range(src, user))
@@ -111,10 +111,10 @@ var/list/marker_beacon_colors = list(
 		. += span_notice("Alt-click to select a color. Current color is [picked_color].")
 
 /obj/structure/marker_beacon/update_icon()
-	if(!picked_color || !marker_beacon_colors[picked_color])
-		picked_color = pick(marker_beacon_colors)
+	if(!picked_color || !GLOB.marker_beacon_colors[picked_color])
+		picked_color = pick(GLOB.marker_beacon_colors)
 	icon_state = "[icon_base][lowertext(picked_color)]-on"
-	set_light(light_range, light_power, marker_beacon_colors[picked_color])
+	set_light(light_range, light_power, GLOB.marker_beacon_colors[picked_color])
 
 /obj/structure/marker_beacon/attack_hand(mob/living/user)
 	if(perma)
@@ -152,7 +152,7 @@ var/list/marker_beacon_colors = list(
 	if(!in_range(src, user))
 		return
 
-	var/options = marker_beacon_colors.Copy()
+	var/options = GLOB.marker_beacon_colors.Copy()
 	options += list("Random" = FALSE) //not a true color, will pick a random color
 	var/input_color = tgui_input_list(user, "Choose a color.", "Beacon Color", options)
 	if(user.incapacitated() || !istype(user) || !in_range(src, user))
diff --git a/code/game/objects/items/weapons/handcuffs.dm b/code/game/objects/items/weapons/handcuffs.dm
index 6832f2f667..ae3a0fbae6 100644
--- a/code/game/objects/items/weapons/handcuffs.dm
+++ b/code/game/objects/items/weapons/handcuffs.dm
@@ -117,7 +117,6 @@
 		user.drop_l_hand()
 		user.stop_pulling()
 
-var/last_chew = 0
 /mob/living/carbon/human/RestrainedClickOn(var/atom/A)
 	if (A != src) return ..()
 	if (last_chew + 26 > world.time) return
diff --git a/code/game/objects/items/weapons/policetape.dm b/code/game/objects/items/weapons/policetape.dm
index 507bb38dee..85fcd39aa5 100644
--- a/code/game/objects/items/weapons/policetape.dm
+++ b/code/game/objects/items/weapons/policetape.dm
@@ -26,8 +26,13 @@
 		return INITIALIZE_HINT_QDEL
 
 
-var/list/image/hazard_overlays
-var/list/tape_roll_applications = list()
+GLOBAL_LIST_INIT_TYPED(hazard_overlays, /image, list(
+		"[NORTH]"	= new/image('icons/effects/warning_stripes.dmi', icon_state = "N"),
+		"[EAST]"	= new/image('icons/effects/warning_stripes.dmi', icon_state = "E"),
+		"[SOUTH]"	= new/image('icons/effects/warning_stripes.dmi', icon_state = "S"),
+		"[WEST]"	= new/image('icons/effects/warning_stripes.dmi', icon_state = "W")
+	))
+GLOBAL_LIST_EMPTY(tape_roll_applications)
 
 /obj/item/tape
 	name = "tape"
@@ -55,12 +60,6 @@ var/list/tape_roll_applications = list()
 
 /obj/item/tape/Initialize(mapload)
 	. = ..()
-	if(!hazard_overlays)
-		hazard_overlays = list()
-		hazard_overlays["[NORTH]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "N")
-		hazard_overlays["[EAST]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "E")
-		hazard_overlays["[SOUTH]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "S")
-		hazard_overlays["[WEST]"]	= new/image('icons/effects/warning_stripes.dmi', icon_state = "W")
 	update_icon()
 
 /obj/item/taperoll/medical
@@ -301,18 +300,18 @@ var/list/tape_roll_applications = list()
 	if (istype(A, /turf/simulated/floor) ||istype(A, /turf/unsimulated/floor))
 		var/turf/F = A
 		var/direction = user.loc == F ? user.dir : turn(user.dir, 180)
-		var/icon/hazard_overlay = hazard_overlays["[direction]"]
-		if(tape_roll_applications[F] == null)
-			tape_roll_applications[F] = 0
+		var/icon/hazard_overlay = GLOB.hazard_overlays["[direction]"]
+		if(GLOB.tape_roll_applications[F] == null)
+			GLOB.tape_roll_applications[F] = 0
 
-		if(tape_roll_applications[F] & direction) // hazard_overlay in F.overlays wouldn't work.
+		if(GLOB.tape_roll_applications[F] & direction) // hazard_overlay in F.overlays wouldn't work.
 			user.visible_message("\The [user] uses the adhesive of \the [src] to remove area markings from \the [F].", "You use the adhesive of \the [src] to remove area markings from \the [F].")
 			F.cut_overlay(hazard_overlay)
-			tape_roll_applications[F] &= ~direction
+			GLOB.tape_roll_applications[F] &= ~direction
 		else
 			user.visible_message("\The [user] applied \the [src] on \the [F] to create area markings.", "You apply \the [src] on \the [F] to create area markings.")
 			F.add_overlay(hazard_overlay)
-			tape_roll_applications[F] |= direction
+			GLOB.tape_roll_applications[F] |= direction
 		return
 
 /obj/item/tape/proc/crumple()
diff --git a/code/game/objects/random/_random.dm b/code/game/objects/random/_random.dm
index a2a18a07bf..65190b035c 100644
--- a/code/game/objects/random/_random.dm
+++ b/code/game/objects/random/_random.dm
@@ -99,7 +99,7 @@
 //	Multi Point Spawn
 //	Selects one spawn point out of a group of points with the same ID and asks it to generate its items
 */
-var/list/multi_point_spawns
+GLOBAL_LIST_EMPTY(multi_point_spawns)
 
 /obj/random_multi
 	name = "random object spawn point"
@@ -114,19 +114,17 @@ var/list/multi_point_spawns
 	. = ..()
 	weight = max(1, round(weight))
 
-	if(!multi_point_spawns)
-		multi_point_spawns = list()
-	var/list/spawnpoints = multi_point_spawns[id]
+	var/list/spawnpoints = GLOB.multi_point_spawns[id]
 	if(!spawnpoints)
 		spawnpoints = list()
-		multi_point_spawns[id] = spawnpoints
+		GLOB.multi_point_spawns[id] = spawnpoints
 	spawnpoints[src] = weight
 
 /obj/random_multi/Destroy()
-	var/list/spawnpoints = multi_point_spawns[id]
+	var/list/spawnpoints = GLOB.multi_point_spawns[id]
 	spawnpoints -= src
-	if(!spawnpoints.len)
-		multi_point_spawns -= id
+	if(!length(spawnpoints))
+		GLOB.multi_point_spawns -= id
 	. = ..()
 
 /obj/random_multi/proc/generate_items()
diff --git a/code/game/turfs/flooring/flooring_decals.dm b/code/game/turfs/flooring/flooring_decals.dm
index 9f37fbca2b..cb2a96476d 100644
--- a/code/game/turfs/flooring/flooring_decals.dm
+++ b/code/game/turfs/flooring/flooring_decals.dm
@@ -1,7 +1,7 @@
 // These are objects that destroy themselves and add themselves to the
 // decal list of the floor under them. Use them rather than distinct icon_states
 // when mapping in interesting floor designs.
-var/list/floor_decals = list()
+GLOBAL_LIST_EMPTY(floor_decals)
 
 /obj/effect/floor_decal
 	name = "floor decal"
@@ -25,10 +25,10 @@ var/list/floor_decals = list()
 	var/turf/T = get_turf(src)
 	if(istype(T, /turf/simulated/floor) || istype(T, /turf/unsimulated/floor) || istype(T, /turf/simulated/shuttle/floor))
 		var/cache_key = get_cache_key(T)
-		var/image/I = floor_decals[cache_key]
+		var/image/I = GLOB.floor_decals[cache_key]
 		if(!I)
 			I = make_decal_image()
-			floor_decals[cache_key] = I
+			GLOB.floor_decals[cache_key] = I
 		LAZYADD(T.decals, I) // Add to its decals list (so it remembers to re-apply after it cuts overlays)
 		T.add_overlay(I) // Add to its current overlays too.
 		return T
diff --git a/code/game/turfs/simulated/wall_types_vr.dm b/code/game/turfs/simulated/wall_types_vr.dm
index 96369116b7..e1e6bb3a4c 100644
--- a/code/game/turfs/simulated/wall_types_vr.dm
+++ b/code/game/turfs/simulated/wall_types_vr.dm
@@ -39,7 +39,7 @@
 	. = ..()
 	update_icon(1)
 
-var/list/flesh_overlay_cache = list()
+GLOBAL_LIST_EMPTY(flesh_overlay_cache)
 
 /turf/simulated/flesh/update_icon(var/update_neighbors)
 	cut_overlays()
@@ -51,9 +51,9 @@ var/list/flesh_overlay_cache = list()
 			var/turf/T = get_step(src,direction)
 			if(istype(T) && !T.density)
 				var/place_dir = turn(direction, 180)
-				if(!flesh_overlay_cache["flesh_side_[place_dir]"])
-					flesh_overlay_cache["flesh_side_[place_dir]"] = image('icons/turf/stomach_vr.dmi', "flesh_side", dir = place_dir)
-				add_overlay(flesh_overlay_cache["flesh_side_[place_dir]"])
+				if(!GLOB.flesh_overlay_cache["flesh_side_[place_dir]"])
+					GLOB.flesh_overlay_cache["flesh_side_[place_dir]"] = image('icons/turf/stomach_vr.dmi', "flesh_side", dir = place_dir)
+				add_overlay(GLOB.flesh_overlay_cache["flesh_side_[place_dir]"])
 
 	if(update_neighbors)
 		for(var/direction in GLOB.alldirs)
diff --git a/code/modules/admin/admin_verbs.dm b/code/modules/admin/admin_verbs.dm
index 5aa911f97f..6c3dfb1045 100644
--- a/code/modules/admin/admin_verbs.dm
+++ b/code/modules/admin/admin_verbs.dm
@@ -246,7 +246,7 @@ ADMIN_VERB(stealth, R_STEALTH, "Stealth Mode", "Toggle stealth.", "Admin.Game")
 	var/datum/preferences/D
 	var/client/C = GLOB.directory[warned_ckey]
 	if(C)	D = C.prefs
-	else	D = preferences_datums[warned_ckey]
+	else	D = GLOB.preferences_datums[warned_ckey]
 
 	if(!D)
 		to_chat(src, span_warning("Error: warn(): No such ckey found."))
diff --git a/code/modules/admin/verbs/mapping.dm b/code/modules/admin/verbs/mapping.dm
index c0ba7f2214..5051128c85 100644
--- a/code/modules/admin/verbs/mapping.dm
+++ b/code/modules/admin/verbs/mapping.dm
@@ -19,8 +19,8 @@
 //- Identify how hard it is to break into the area and where the weak points are
 //- Check if the area has too much empty space. If so, make it smaller and replace the rest with maintenance tunnels.
 
-var/camera_range_display_status = 0
-var/intercom_range_display_status = 0
+GLOBAL_VAR_INIT(camera_range_display_status, FALSE)
+GLOBAL_VAR_INIT(intercom_range_display_status, FALSE)
 
 GLOBAL_LIST_BOILERPLATE(all_debugging_effects, /obj/effect/debugging)
 
@@ -48,17 +48,17 @@ GLOBAL_LIST_BOILERPLATE(all_debugging_effects, /obj/effect/debugging)
 	set category = "Mapping"
 	set name = "Camera Range Display"
 
-	if(camera_range_display_status)
-		camera_range_display_status = 0
+	if(GLOB.camera_range_display_status)
+		GLOB.camera_range_display_status = FALSE
 	else
-		camera_range_display_status = 1
+		GLOB.camera_range_display_status = TRUE
 
 
 
 	for(var/obj/effect/debugging/camera_range/C in GLOB.all_debugging_effects)
 		qdel(C)
 
-	if(camera_range_display_status)
+	if(GLOB.camera_range_display_status)
 		for(var/obj/machinery/camera/C in cameranet.cameras)
 			new/obj/effect/debugging/camera_range(C.loc)
 	feedback_add_details("admin_verb","mCRD") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
@@ -112,15 +112,15 @@ GLOBAL_LIST_BOILERPLATE(all_debugging_effects, /obj/effect/debugging)
 	set category = "Mapping"
 	set name = "Intercom Range Display"
 
-	if(intercom_range_display_status)
-		intercom_range_display_status = 0
+	if(GLOB.intercom_range_display_status)
+		GLOB.intercom_range_display_status = FALSE
 	else
-		intercom_range_display_status = 1
+		GLOB.intercom_range_display_status = TRUE
 
 	for(var/obj/effect/debugging/marker/M in GLOB.all_debugging_effects)
 		qdel(M)
 
-	if(intercom_range_display_status)
+	if(GLOB.intercom_range_display_status)
 		for(var/obj/item/radio/intercom/I in GLOB.machines)
 			for(var/turf/T in orange(7,I))
 				var/obj/effect/debugging/marker/F = new/obj/effect/debugging/marker(T)
diff --git a/code/modules/asset_cache/assets/preferences.dm b/code/modules/asset_cache/assets/preferences.dm
index 61b0ebcdee..dc99902ed7 100644
--- a/code/modules/asset_cache/assets/preferences.dm
+++ b/code/modules/asset_cache/assets/preferences.dm
@@ -1,4 +1,5 @@
 /datum/asset/simple/preferences
+	var/preview_icons = 'icons/mob/human_races/preview.dmi'
 	assets = list(
 		"preview_protean_animation.gif" = 'icons/mob/human_races/preview_protean_animation.gif',
 		"preview_custom_animation.gif" = 'icons/mob/human_races/preview_custom_animation.gif',
diff --git a/code/modules/blob2/blobs/core.dm b/code/modules/blob2/blobs/core.dm
index 11f1b2def3..c22e8ed7fb 100644
--- a/code/modules/blob2/blobs/core.dm
+++ b/code/modules/blob2/blobs/core.dm
@@ -1,4 +1,4 @@
-var/list/blob_cores = list()
+GLOBAL_LIST_EMPTY(blob_cores)
 
 /obj/structure/blob/core
 	name = "blob core"
@@ -99,7 +99,7 @@ var/list/blob_cores = list()
 
 /obj/structure/blob/core/Initialize(mapload, client/new_overmind = null, new_rate = 2, placed = 0)
 	. = ..()
-	blob_cores += src
+	GLOB.blob_cores += src
 	START_PROCESSING(SSobj, src)
 	update_icon() //so it atleast appears
 	point_rate = new_rate
@@ -117,7 +117,7 @@ var/list/blob_cores = list()
 	var/turf/T = get_turf(src)
 	new /obj/item/blobcore_chunk(T, overmind.blob_type)
 
-	blob_cores -= src
+	GLOB.blob_cores -= src
 	if(overmind)
 		overmind.blob_core = null
 		qdel(overmind)
diff --git a/code/modules/blob2/blobs/node.dm b/code/modules/blob2/blobs/node.dm
index da984be9b5..71a65d4d55 100644
--- a/code/modules/blob2/blobs/node.dm
+++ b/code/modules/blob2/blobs/node.dm
@@ -1,4 +1,4 @@
-var/list/blob_nodes = list()
+GLOBAL_LIST_EMPTY(blob_nodes)
 
 /obj/structure/blob/node
 	name = "blob node"
@@ -11,12 +11,12 @@ var/list/blob_nodes = list()
 
 /obj/structure/blob/node/Initialize(mapload, new_overmind)
 	. = ..()
-	blob_nodes += src
+	GLOB.blob_nodes += src
 	START_PROCESSING(SSobj, src)
 	update_icon()
 
 /obj/structure/blob/node/Destroy()
-	blob_nodes -= src
+	GLOB.blob_nodes -= src
 	STOP_PROCESSING(SSobj, src)
 	return ..()
 
diff --git a/code/modules/blob2/overmind/overmind.dm b/code/modules/blob2/overmind/overmind.dm
index 930c99a439..0cc67b3161 100644
--- a/code/modules/blob2/overmind/overmind.dm
+++ b/code/modules/blob2/overmind/overmind.dm
@@ -1,4 +1,4 @@
-var/list/overminds = list()
+GLOBAL_LIST_EMPTY(overminds)
 
 /mob/observer/blob
 	name = "Blob Overmind"
@@ -36,7 +36,7 @@ var/list/overminds = list()
 	if(pre_placed) //we already have a core!
 		placed = 1
 
-	overminds += src
+	GLOB.overminds += src
 	var/new_name = "[initial(name)] ([rand(1, 999)])"
 	name = new_name
 	real_name = new_name
@@ -67,7 +67,7 @@ var/list/overminds = list()
 			BM.overmind = null
 			BM.update_icons()
 
-	overminds -= src
+	GLOB.overminds -= src
 	return ..()
 
 /mob/observer/blob/get_status_tab_items()
diff --git a/code/modules/client/client procs.dm b/code/modules/client/client procs.dm
index 6166480895..b294dac5b3 100644
--- a/code/modules/client/client procs.dm	
+++ b/code/modules/client/client procs.dm	
@@ -282,14 +282,14 @@ GLOBAL_LIST_INIT(blacklisted_builds, list(
 	GLOB.tickets.ClientLogin(src)
 
 	//preferences datum - also holds some persistant data for the client (because we may as well keep these datums to a minimum)
-	prefs = preferences_datums[ckey]
+	prefs = GLOB.preferences_datums[ckey]
 	if(prefs)
 		prefs.client = src
 		prefs.load_savefile() // just to make sure we have the latest data
 		prefs.apply_all_client_preferences()
 	else
 		prefs = new /datum/preferences(src)
-		preferences_datums[ckey] = prefs
+		GLOB.preferences_datums[ckey] = prefs
 	prefs.last_ip = address				//these are gonna be used for banning
 	prefs.last_id = computer_id			//these are gonna be used for banning
 
diff --git a/code/modules/client/preference_setup/general/03_body.dm b/code/modules/client/preference_setup/general/03_body.dm
index 87e197dc1d..fbacb03ff9 100644
--- a/code/modules/client/preference_setup/general/03_body.dm
+++ b/code/modules/client/preference_setup/general/03_body.dm
@@ -1,6 +1,3 @@
-// Not actually used; just forces this into the RSC for TGUI.
-var/const/preview_icons = 'icons/mob/human_races/preview.dmi'
-
 /datum/preferences
 	var/equip_preview_mob = EQUIP_PREVIEW_ALL
 	var/animations_toggle = FALSE
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index 4e682a3017..cddffabe03 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -1,4 +1,4 @@
-var/list/preferences_datums = list()
+GLOBAL_LIST_EMPTY(preferences_datums)
 
 /datum/preferences
 	/// The path to the general savefile for this datum
diff --git a/code/modules/economy/Events.dm b/code/modules/economy/Events.dm
index 1b14f0b78c..0486df2215 100644
--- a/code/modules/economy/Events.dm
+++ b/code/modules/economy/Events.dm
@@ -8,7 +8,7 @@
 	var/datum/trade_destination/affected_dest
 
 /datum/event/economic_event/start()
-	affected_dest = pickweight(weighted_randomevent_locations)
+	affected_dest = pickweight(GLOB.weighted_randomevent_locations)
 	if(affected_dest.viable_random_events.len)
 		endWhen = rand(60,300)
 		event_type = pick(affected_dest.viable_random_events)
diff --git a/code/modules/economy/Events_Mundane.dm b/code/modules/economy/Events_Mundane.dm
index a399742127..39c06c3a90 100644
--- a/code/modules/economy/Events_Mundane.dm
+++ b/code/modules/economy/Events_Mundane.dm
@@ -6,7 +6,7 @@
 	var/author = "Editor Mike Hammers"
 	var/channel = "The Gibson Gazette"
 
-	var/datum/trade_destination/affected_dest = pick(weighted_mundaneevent_locations)
+	var/datum/trade_destination/affected_dest = pick(GLOB.weighted_mundaneevent_locations)
 	var/body = pick(
 	"Tree stuck in tajaran; firefighters baffled.",\
 	"Armadillos want aardvarks removed from dictionary claims 'here first'.",\
diff --git a/code/modules/economy/TradeDestinations.dm b/code/modules/economy/TradeDestinations.dm
index 8225e34efc..fcb822073e 100644
--- a/code/modules/economy/TradeDestinations.dm
+++ b/code/modules/economy/TradeDestinations.dm
@@ -1,6 +1,6 @@
 
-var/list/weighted_randomevent_locations = list()
-var/list/weighted_mundaneevent_locations = list()
+GLOBAL_LIST_EMPTY(weighted_randomevent_locations)
+GLOBAL_LIST_EMPTY(weighted_mundaneevent_locations)
 
 /datum/trade_destination
 	var/name = ""
diff --git a/code/modules/economy/economy_misc.dm b/code/modules/economy/economy_misc.dm
index cc507fdfb7..5ae68ee9e5 100644
--- a/code/modules/economy/economy_misc.dm
+++ b/code/modules/economy/economy_misc.dm
@@ -36,8 +36,8 @@ GLOBAL_VAR_INIT(economy_init, 0)
 
 	for(var/loc_type in subtypesof(/datum/trade_destination))
 		var/datum/trade_destination/D = new loc_type
-		weighted_randomevent_locations[D] = D.viable_random_events.len
-		weighted_mundaneevent_locations[D] = D.mundane_probability
+		GLOB.weighted_randomevent_locations[D] = D.viable_random_events.len
+		GLOB.weighted_mundaneevent_locations[D] = D.mundane_probability
 
 	create_station_account()
 
diff --git a/code/modules/emotes/definitions/_mob.dm b/code/modules/emotes/definitions/_mob.dm
index 8651c933b1..a87a47ac98 100644
--- a/code/modules/emotes/definitions/_mob.dm
+++ b/code/modules/emotes/definitions/_mob.dm
@@ -1,4 +1,4 @@
-var/list/_default_mob_emotes = list(
+GLOBAL_LIST_INIT(default_mob_emotes, list(
 	/decl/emote/visible,
 	/decl/emote/visible/scratch,
 	/decl/emote/visible/drool,
@@ -23,4 +23,4 @@ var/list/_default_mob_emotes = list(
 	/decl/emote/audible/choke,
 	/decl/emote/audible/moan,
 	/decl/emote/audible/gnarl,
-)
+))
diff --git a/code/modules/emotes/emote_mob.dm b/code/modules/emotes/emote_mob.dm
index 97c983fe3a..e40d68e5a6 100644
--- a/code/modules/emotes/emote_mob.dm
+++ b/code/modules/emotes/emote_mob.dm
@@ -4,7 +4,7 @@
 	var/last_emote_summary
 
 /mob/proc/get_available_emotes()
-	return global._default_mob_emotes.Copy()
+	return GLOB.default_mob_emotes.Copy()
 
 /mob/proc/can_emote(var/emote_type)
 	return (stat == CONSCIOUS)
diff --git a/code/modules/events/event_dynamic.dm b/code/modules/events/event_dynamic.dm
index ca129224cd..56a8cb83b0 100644
--- a/code/modules/events/event_dynamic.dm
+++ b/code/modules/events/event_dynamic.dm
@@ -68,7 +68,7 @@ GLOBAL_LIST_EMPTY(event_last_fired)
 	possibleEvents[/datum/event/electrical_storm] = 15 * active_with_role[JOB_JANITOR] + 5 * active_with_role[DEPARTMENT_ENGINEERING]
 	possibleEvents[/datum/event/wallrot] = 30 * active_with_role[DEPARTMENT_ENGINEERING] + 50 * active_with_role[JOB_ALT_GARDENER]
 
-	if(!spacevines_spawned)
+	if(!GLOB.spacevines_spawned)
 		possibleEvents[/datum/event/spacevine] = 10 + 5 * active_with_role[DEPARTMENT_ENGINEERING]
 	if(minutes_passed >= 30) // Give engineers time to set up engine
 		possibleEvents[/datum/event/meteor_wave] = 10 * active_with_role[DEPARTMENT_ENGINEERING]
@@ -80,7 +80,7 @@ GLOBAL_LIST_EMPTY(event_last_fired)
 
 	possibleEvents[/datum/event/prison_break] = active_with_role[DEPARTMENT_SECURITY] * 50
 	if(active_with_role[DEPARTMENT_SECURITY] > 0)
-		if(!sent_spiders_to_station)
+		if(!GLOB.sent_spiders_to_station)
 			possibleEvents[/datum/event/spider_infestation] = max(active_with_role[DEPARTMENT_SECURITY], 5) + 5
 		possibleEvents[/datum/event/random_antag] = max(active_with_role[DEPARTMENT_SECURITY], 5) + 2.5
 
diff --git a/code/modules/events/meteors.dm b/code/modules/events/meteors.dm
index b6979932a1..a5765228c0 100644
--- a/code/modules/events/meteors.dm
+++ b/code/modules/events/meteors.dm
@@ -70,13 +70,13 @@
 /datum/event/meteor_wave/proc/get_meteors()
 	switch(severity)
 		if(EVENT_LEVEL_MAJOR)
-			return meteors_major
+			return GLOB.meteors_major
 		if(EVENT_LEVEL_MODERATE)
-			return meteors_moderate
+			return GLOB.meteors_moderate
 		else
-			return meteors_minor
+			return GLOB.meteors_minor
 
-/var/list/meteors_minor = list(
+GLOBAL_LIST_INIT(meteors_minor, list(
 	/obj/effect/meteor/medium     = 80,
 	/obj/effect/meteor/dust       = 30,
 	/obj/effect/meteor/irradiated = 30,
@@ -84,9 +84,9 @@
 	/obj/effect/meteor/flaming    = 10,
 	///obj/effect/meteor/golden     = 10,
 	///obj/effect/meteor/silver     = 10,
-)
+))
 
-/var/list/meteors_moderate = list(
+GLOBAL_LIST_INIT(meteors_moderate, list(
 	/obj/effect/meteor/medium     = 80,
 	/obj/effect/meteor/big        = 30,
 	/obj/effect/meteor/dust       = 30,
@@ -95,9 +95,9 @@
 	///obj/effect/meteor/golden     = 10,
 	///obj/effect/meteor/silver     = 10,
 	/obj/effect/meteor/emp        = 10,
-)
+))
 
-/var/list/meteors_major = list(
+GLOBAL_LIST_INIT(meteors_major, list(
 	/obj/effect/meteor/medium     = 80,
 	/obj/effect/meteor/big        = 30,
 	/obj/effect/meteor/dust       = 30,
@@ -107,7 +107,7 @@
 	///obj/effect/meteor/golden     = 10,
 	///obj/effect/meteor/silver     = 10,
 	/obj/effect/meteor/tunguska   = 1,
-)
+))
 
 // Overmap version
 /datum/event/meteor_wave/overmap
diff --git a/code/modules/events/money_hacker.dm b/code/modules/events/money_hacker.dm
index 0cdc2b452d..bd33859e18 100644
--- a/code/modules/events/money_hacker.dm
+++ b/code/modules/events/money_hacker.dm
@@ -1,5 +1,3 @@
-//var/global/account_hack_attempted = 0
-
 GLOBAL_VAR_INIT(account_hack_attempted, 0)
 
 /datum/event/money_hacker
diff --git a/code/modules/events/spacevine.dm b/code/modules/events/spacevine.dm
index 48c9b91c22..de8e4d825e 100644
--- a/code/modules/events/spacevine.dm
+++ b/code/modules/events/spacevine.dm
@@ -1,11 +1,11 @@
-/var/global/spacevines_spawned = 0
+GLOBAL_VAR_INIT(spacevines_spawned, 0)
 
 /datum/event/spacevine
 	announceWhen	= 60
 
 /datum/event/spacevine/start()
 	spacevine_infestation()
-	spacevines_spawned = 1
+	GLOB.spacevines_spawned = 1
 
 /datum/event/spacevine/announce()
 	level_seven_announcement()
diff --git a/code/modules/events/spider_infestation.dm b/code/modules/events/spider_infestation.dm
index d553ba499b..0bf3eedf86 100644
--- a/code/modules/events/spider_infestation.dm
+++ b/code/modules/events/spider_infestation.dm
@@ -1,4 +1,4 @@
-/var/global/sent_spiders_to_station = 0
+GLOBAL_VAR_INIT(sent_spiders_to_station, 0)
 
 /datum/event/spider_infestation
 	announceWhen	= 90
@@ -8,7 +8,7 @@
 /datum/event/spider_infestation/setup()
 	announceWhen = rand(announceWhen, announceWhen + 60)
 	spawncount = rand(4 * severity, 6 * severity)	//spiderlings only have a 50% chance to grow big and strong
-	sent_spiders_to_station = 0
+	GLOB.sent_spiders_to_station = 0
 
 /datum/event/spider_infestation/announce()
 	command_announcement.Announce("Unidentified lifesigns detected coming aboard [station_name()]. Secure any exterior access, including ducting and ventilation.", "Lifesign Alert", new_sound = 'sound/AI/aliens.ogg')
diff --git a/code/modules/food/food/snacks/meat.dm b/code/modules/food/food/snacks/meat.dm
index 231d48f3b4..920a12a92e 100644
--- a/code/modules/food/food/snacks/meat.dm
+++ b/code/modules/food/food/snacks/meat.dm
@@ -166,7 +166,7 @@
 	reagents.add_reagent(REAGENT_ID_SHOCKCHEM, 6)
 	bitesize = 6
 
-var/static/list/worm_meat_spawns = list (
+GLOBAL_LIST_INIT(worm_meat_spawns, list (
 		/obj/random/junk = 30,
 		/obj/random/trash = 30,
 		/obj/random/maintenance/clean = 15,
@@ -180,7 +180,7 @@ var/static/list/worm_meat_spawns = list (
 		/obj/random/handgun = 1,
 		/obj/random/toolbox = 4,
 		/obj/random/drinkbottle = 5
-)
+))
 
 /obj/item/reagent_containers/food/snacks/meat/worm
 	name = "weird meat"
@@ -200,7 +200,7 @@ var/static/list/worm_meat_spawns = list (
 
 /obj/item/reagent_containers/food/snacks/meat/worm/attackby(obj/item/W as obj, mob/user as mob)
 	if(istype(W,/obj/item/material/knife))
-		var/to_spawn = pickweight(worm_meat_spawns)
+		var/to_spawn = pickweight(GLOB.worm_meat_spawns)
 
 		new to_spawn(get_turf(src))
 
diff --git a/code/modules/gamemaster/event2/event.dm b/code/modules/gamemaster/event2/event.dm
index bc99179f17..c65a05ccd4 100644
--- a/code/modules/gamemaster/event2/event.dm
+++ b/code/modules/gamemaster/event2/event.dm
@@ -102,7 +102,7 @@ This allows for events that have their announcement happen after the end itself.
 
 /datum/event2/event/proc/find_random_areas(list/specific_areas = list(), ignore_occupancy = FALSE)
 	if(!LAZYLEN(specific_areas))
-		specific_areas = global.the_station_areas.Copy()
+		specific_areas = GLOB.the_station_areas.Copy()
 
 	var/list/area/grand_list_of_areas = get_all_existing_areas_of_types(specific_areas)
 	. = list()
diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index 77f1adb596..01bcab47b6 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -32,6 +32,7 @@
 
 	var/rest_dir = 0					//To lay down in a specific direction
 	var/list/datum/genetics/side_effect/genetic_side_effects = list()	//For any genetic side effects we currently have.
+	var/last_chew = 0
 
 /mob/living/carbon/human/Initialize(mapload, var/new_species = null)
 	if(!dna)
diff --git a/code/modules/mob/living/silicon/ai/ai.dm b/code/modules/mob/living/silicon/ai/ai.dm
index ff92d847fc..7219cc94ca 100644
--- a/code/modules/mob/living/silicon/ai/ai.dm
+++ b/code/modules/mob/living/silicon/ai/ai.dm
@@ -1,7 +1,7 @@
 #define AI_CHECK_WIRELESS 1
 #define AI_CHECK_RADIO 2
 
-var/list/ai_verbs_default = list(
+GLOBAL_LIST_INIT(ai_verbs_default, list(
 	// /mob/living/silicon/ai/proc/ai_recall_shuttle,
 	/mob/living/silicon/ai/proc/ai_emergency_message,
 	/mob/living/silicon/ai/proc/ai_goto_location,
@@ -27,7 +27,7 @@ var/list/ai_verbs_default = list(
 	/mob/living/silicon/ai/proc/delete_images,
 	/mob/living/silicon/ai/proc/toggle_multicam_verb,
 	/mob/living/silicon/ai/proc/add_multicam_verb
-)
+))
 
 //Not sure why this is necessary...
 /proc/AutoUpdateAI(obj/subject)
@@ -99,11 +99,11 @@ var/list/ai_verbs_default = list(
 	can_be_antagged = TRUE
 
 /mob/living/silicon/ai/proc/add_ai_verbs()
-	add_verb(src, ai_verbs_default)
+	add_verb(src, GLOB.ai_verbs_default)
 	add_verb(src, silicon_subsystems)
 
 /mob/living/silicon/ai/proc/remove_ai_verbs()
-	remove_verb(src, ai_verbs_default)
+	remove_verb(src, GLOB.ai_verbs_default)
 	remove_verb(src, silicon_subsystems)
 
 /mob/living/silicon/ai/Initialize(mapload, is_decoy, datum/ai_laws/L, obj/item/mmi/B, safety = FALSE)
@@ -286,7 +286,7 @@ var/list/ai_verbs_default = list(
 			custom_sprite = 1
 			selected_sprite = new/datum/ai_icon("Custom", "[src.ckey]-ai", "4", "[ckey]-ai-crash", "#FFFFFF", "#FFFFFF", "#FFFFFF")
 		else
-			selected_sprite = default_ai_icon
+			selected_sprite = GLOB.default_ai_icon
 	update_icon()
 
 /mob/living/silicon/ai/pointed(atom/A as mob|obj|turf in view())
@@ -362,7 +362,7 @@ var/list/ai_verbs_default = list(
 		return
 
 	if (!custom_sprite)
-		var/new_sprite = tgui_input_list(src, "Select an icon!", "AI", ai_icons)
+		var/new_sprite = tgui_input_list(src, "Select an icon!", "AI", GLOB.ai_icons)
 		if(new_sprite) selected_sprite = new_sprite
 	update_icon()
 
@@ -903,7 +903,7 @@ var/list/ai_verbs_default = list(
 	..()
 
 /mob/living/silicon/ai/update_icon()
-	if(!selected_sprite) selected_sprite = default_ai_icon
+	if(!selected_sprite) selected_sprite = GLOB.default_ai_icon
 
 	if(stat == DEAD)
 		icon_state = selected_sprite.dead_icon
diff --git a/code/modules/mob/living/silicon/ai/icons.dm b/code/modules/mob/living/silicon/ai/icons.dm
index 57d02f8a56..f1d5ab27f0 100644
--- a/code/modules/mob/living/silicon/ai/icons.dm
+++ b/code/modules/mob/living/silicon/ai/icons.dm
@@ -1,5 +1,5 @@
-var/datum/ai_icon/default_ai_icon = new/datum/ai_icon/blue()
-var/list/datum/ai_icon/ai_icons
+GLOBAL_DATUM_INIT(default_ai_icon, /datum/ai_icon, new/datum/ai_icon/blue())
+GLOBAL_LIST_INIT_TYPED(ai_icons, /datum/ai_icon, init_subtypes(/datum/ai_icon, ai_icons))
 
 /datum/ai_icon
 	var/name
@@ -19,9 +19,6 @@ var/list/datum/ai_icon/ai_icons
 		src.alive_light = alive_light
 		src.nopower_light = nopower_light
 		src.dead_light = dead_light
-	if(!ai_icons)
-		ai_icons = list()
-		init_subtypes(/datum/ai_icon, ai_icons)
 	..()
 
 /datum/ai_icon/red
diff --git a/code/modules/mob/living/simple_mob/subtypes/animal/pets/cat.dm b/code/modules/mob/living/simple_mob/subtypes/animal/pets/cat.dm
index d42f1e147a..98dbf6120f 100644
--- a/code/modules/mob/living/simple_mob/subtypes/animal/pets/cat.dm
+++ b/code/modules/mob/living/simple_mob/subtypes/animal/pets/cat.dm
@@ -1,4 +1,4 @@
-var/list/_cat_default_emotes = list(
+GLOBAL_LIST_INIT(cat_default_emotes, list(
 	/decl/emote/visible,
 	/decl/emote/visible/scratch,
 	/decl/emote/visible/drool,
@@ -25,7 +25,7 @@ var/list/_cat_default_emotes = list(
 	/decl/emote/audible/gnarl,
 	/decl/emote/audible/purr,
 	/decl/emote/audible/purrlong
-)
+))
 
 /mob/living/simple_mob/animal/passive/cat
 	name = "cat"
@@ -60,7 +60,7 @@ var/list/_cat_default_emotes = list(
 	return ..()
 
 /mob/living/simple_mob/animal/passive/cat/get_available_emotes()
-	return global._cat_default_emotes.Copy()
+	return GLOB.cat_default_emotes.Copy()
 
 /mob/living/simple_mob/animal/passive/cat/handle_special()
 	if(!stat && prob(2)) // spooky
diff --git a/code/modules/mob/living/simple_mob/subtypes/animal/sif/grafadreka.dm b/code/modules/mob/living/simple_mob/subtypes/animal/sif/grafadreka.dm
index e12e9a9bd5..6233754c23 100644
--- a/code/modules/mob/living/simple_mob/subtypes/animal/sif/grafadreka.dm
+++ b/code/modules/mob/living/simple_mob/subtypes/animal/sif/grafadreka.dm
@@ -89,7 +89,7 @@ Field studies suggest analytical abilities on par with some species of cepholapo
 		to_chat(target, span_notice("You hear an eerie howl from somewhere to the [dir2text(direction)]."))
 
 /mob/living/simple_mob/animal/sif/grafadreka/get_available_emotes()
-	. = global._default_mob_emotes.Copy()
+	. = GLOB.default_mob_emotes.Copy()
 	if(!is_baby)
 		. |= /decl/emote/audible/drake_howl
 	return
diff --git a/code/modules/organs/organ_icon.dm b/code/modules/organs/organ_icon.dm
index bfefaf587f..ab1dee10bf 100644
--- a/code/modules/organs/organ_icon.dm
+++ b/code/modules/organs/organ_icon.dm
@@ -218,8 +218,8 @@ GLOBAL_LIST_EMPTY(limb_icon_cache)
 // damage amount to represent the pain of the injuries involved.
 
 // Global scope, used in code below.
-var/list/flesh_hud_colours = list("#02BA08","#9ECF19","#DEDE10","#FFAA00","#FF0000","#AA0000","#660000")
-var/list/robot_hud_colours = list("#CFCFCF","#AFAFAF","#8F8F8F","#6F6F6F","#4F4F4F","#2F2F2F","#000000")
+GLOBAL_LIST_INIT(flesh_hud_colours, list("#02BA08","#9ECF19","#DEDE10","#FFAA00","#FF0000","#AA0000","#660000"))
+GLOBAL_LIST_INIT(robot_hud_colours, list("#CFCFCF","#AFAFAF","#8F8F8F","#6F6F6F","#4F4F4F","#2F2F2F","#000000"))
 
 /obj/item/organ/external/proc/get_damage_hud_image(var/min_dam_state)
 
@@ -254,6 +254,6 @@ var/list/robot_hud_colours = list("#CFCFCF","#AFAFAF","#8F8F8F","#6F6F6F","#4F4F
 	if(!isnull(min_dam_state) && dam_state < min_dam_state)
 		dam_state = min_dam_state
 	// Apply colour and return product.
-	var/list/hud_colours = (robotic < ORGAN_ROBOT) ? flesh_hud_colours : robot_hud_colours
+	var/list/hud_colours = (robotic < ORGAN_ROBOT) ? GLOB.flesh_hud_colours : GLOB.robot_hud_colours
 	hud_damage_image.color = hud_colours[max(1,min(CEILING(dam_state*hud_colours.len, 1),hud_colours.len))]
 	return hud_damage_image
diff --git a/code/modules/security levels/keycard authentication.dm b/code/modules/security levels/keycard authentication.dm
index 821c6386d6..9104fbfedd 100644
--- a/code/modules/security levels/keycard authentication.dm	
+++ b/code/modules/security levels/keycard authentication.dm	
@@ -189,19 +189,19 @@
 	if(CONFIG_GET(flag/ert_admin_call_only)) return 1
 	return SSticker.mode && SSticker.mode.ert_disabled
 
-var/global/maint_all_access = 0
+GLOBAL_VAR_INIT(maint_all_access, FALSE)
 
 /proc/make_maint_all_access()
-	maint_all_access = 1
+	GLOB.maint_all_access = TRUE
 	to_chat(world, span_alert(span_red(span_huge("Attention!"))))
 	to_chat(world, span_alert(span_red("The maintenance access requirement has been revoked on all airlocks.")))
 
 /proc/revoke_maint_all_access()
-	maint_all_access = 0
+	GLOB.maint_all_access = FALSE
 	to_chat(world, span_alert(span_red(span_huge("Attention!"))))
 	to_chat(world, span_alert(span_red("The maintenance access requirement has been readded on all maintenance airlocks.")))
 
 /obj/machinery/door/airlock/allowed(mob/M)
-	if(maint_all_access && src.check_access_list(list(ACCESS_MAINT_TUNNELS)))
+	if(GLOB.maint_all_access && src.check_access_list(list(ACCESS_MAINT_TUNNELS)))
 		return 1
 	return ..(M)
diff --git a/code/modules/vore/persist/persist_vr.dm b/code/modules/vore/persist/persist_vr.dm
index b8b654bf54..7e821fbde5 100644
--- a/code/modules/vore/persist/persist_vr.dm
+++ b/code/modules/vore/persist/persist_vr.dm
@@ -49,7 +49,7 @@
 	// Find out of this mob is a proper mob!
 	if (persister.mind && persister.mind.loaded_from_ckey)
 		// Okay this mob has a real loaded-from-savefile mind in it!
-		var/datum/preferences/prefs = preferences_datums[persister.mind.loaded_from_ckey]
+		var/datum/preferences/prefs = GLOB.preferences_datums[persister.mind.loaded_from_ckey]
 		if(!prefs)
 			WARNING("Persist (P4P): [persister.mind] was loaded from ckey [persister.mind.loaded_from_ckey] but no prefs datum found.")
 			return