diff --git a/code/_globalvars/misc.dm b/code/_globalvars/misc.dm
index f933105e13b..f4cdd766cb9 100644
--- a/code/_globalvars/misc.dm
+++ b/code/_globalvars/misc.dm
@@ -88,4 +88,6 @@ var/copier_items_printed_logged = FALSE
 
 GLOBAL_VAR(map_name) // Self explanatory
 
-var/global/datum/datacore/data_core = null // Station datacore, manifest, etc
\ No newline at end of file
+var/global/datum/datacore/data_core = null // Station datacore, manifest, etc
+
+GLOBAL_VAR_INIT(panic_bunker_enabled, 0) // Is the panic bunker enabled
\ No newline at end of file
diff --git a/code/modules/admin/admin_verbs.dm b/code/modules/admin/admin_verbs.dm
index d39275c326e..7687b22f71c 100644
--- a/code/modules/admin/admin_verbs.dm
+++ b/code/modules/admin/admin_verbs.dm
@@ -80,7 +80,8 @@ var/list/admin_verbs_admin = list(
 	/client/proc/list_afks,
 	/client/proc/cmd_admin_headset_message,
 	/client/proc/spawn_floor_cluwne,
-	/client/proc/show_discord_duplicates,
+	/client/proc/show_discord_duplicates, // This needs removing at some point, ingame discord linking got removed in #11359
+	/client/proc/toggle_panic_bunker
 )
 var/list/admin_verbs_ban = list(
 	/client/proc/unban_panel,
@@ -1027,4 +1028,17 @@ var/list/admin_verbs_ticket = list(
 	if(!check_rights(R_ADMIN))
 		return
 
-	holder.discord_duplicates()
\ No newline at end of file
+	holder.discord_duplicates()
+
+/client/proc/toggle_panic_bunker()
+	set name = "Toggle Panic Bunker"
+	set category = "Admin"
+	set desc = "Disables new players connecting."
+
+	if(!check_rights(R_ADMIN))
+		return
+
+	GLOB.panic_bunker_enabled = !GLOB.panic_bunker_enabled 
+
+	log_admin("[key_name(usr)] has [GLOB.panic_bunker_enabled  ? "activated" : "deactivated"] the panic bunker.")
+	message_admins("[key_name_admin(usr)] has [GLOB.panic_bunker_enabled  ? "activated" : "deactivated"] the panic bunker.")
diff --git a/code/modules/client/client procs.dm b/code/modules/client/client procs.dm
index 84e86b0f4d3..95f6c16ba97 100644
--- a/code/modules/client/client procs.dm	
+++ b/code/modules/client/client procs.dm	
@@ -408,6 +408,16 @@
 
 	Master.UpdateTickRate()
 
+	// Check total playercount
+	var/playercount = 0
+	for(var/mob/M in GLOB.player_list)
+		if(M.client)
+			playercount += 1
+	
+	if(playercount >= 150 && GLOB.panic_bunker_enabled == 0)
+		GLOB.panic_bunker_enabled = 1
+		message_admins("Panic bunker has been automatically enabled due to playercount surpassing 150")
+
 /client/proc/is_connecting_from_localhost()
 	var/localhost_addresses = list("127.0.0.1", "::1") // Adresses
 	if(!isnull(address) && address in localhost_addresses)
@@ -533,6 +543,14 @@
 			message_admins("SQL ERROR during log_client_to_db (update). Error : \[[err]\]\n")
 	else
 		//New player!! Need to insert all the stuff
+
+		// Check new peeps for panic bunker
+		if(GLOB.panic_bunker_enabled)
+			message_admins("<span class='adminnotice'>Failed Login: [key] - New account attempting to connect during panic bunker</span>")
+			src << "Sorry but the server is currently not accepting connections from never before seen players. Please try again later."
+			del(src)
+			return // Dont insert or they can just go in again
+		
 		var/DBQuery/query_insert = dbcon.NewQuery("INSERT INTO [format_table_name("player")] (id, ckey, firstseen, lastseen, ip, computerid, lastadminrank) VALUES (null, '[ckey]', Now(), Now(), '[sql_ip]', '[sql_computerid]', '[sql_admin_rank]')")
 		if(!query_insert.Execute())
 			var/err = query_insert.ErrorMsg()