diff --git a/code/modules/antagonists/blob/overmind.dm b/code/modules/antagonists/blob/overmind.dm
index e6f8ad51e22..dcfc2a184f4 100644
--- a/code/modules/antagonists/blob/overmind.dm
+++ b/code/modules/antagonists/blob/overmind.dm
@@ -61,6 +61,9 @@ GLOBAL_LIST_EMPTY(blob_nodes)
 	/// The list of strains the blob can reroll for.
 	var/list/strain_choices
 
+	/// Adminbus potential - if this is set to FALSE, the blob won't end the round upon reaching critical mass.
+	var/end_round_on_victory = TRUE
+
 /mob/eye/blob/Initialize(mapload, starting_points = OVERMIND_STARTING_POINTS)
 	ADD_TRAIT(src, TRAIT_BLOB_ALLY, INNATE_TRAIT)
 	validate_location()
@@ -160,16 +163,8 @@ GLOBAL_LIST_EMPTY(blob_nodes)
 
 			qdel(src)
 	else if(!victory_in_progress && (blobs_legit.len >= blobwincount))
-		victory_in_progress = TRUE
-		priority_announce("Biohazard has reached critical mass. Station loss is imminent.", "Biohazard Alert")
-		SSsecurity_level.set_level(SEC_LEVEL_DELTA)
+		begin_victory()
 
-		// Set status displays to biohazard alert - critical level
-		send_status_display_biohazard_alert()
-
-		max_blob_points = INFINITY
-		blob_points = INFINITY
-		addtimer(CALLBACK(src, PROC_REF(victory)), 45 SECONDS)
 	else if(!free_strain_rerolls && (last_reroll_time + BLOB_POWER_REROLL_FREE_TIME<world.time))
 		to_chat(src, span_boldnotice("You have gained another free strain re-roll."))
 		free_strain_rerolls = 1
@@ -199,6 +194,23 @@ GLOBAL_LIST_EMPTY(blob_nodes)
 /mob/eye/blob/proc/clear_biohazard_display()
 	clear_status_display_biohazard()
 
+/// Announce the blob's victory! Tell everyone that they're about to explode and/or turn into biomass soup and give the overmind a victory lap.
+/mob/eye/blob/proc/begin_victory()
+	victory_in_progress = TRUE
+	priority_announce("Biohazard has reached critical mass. Station loss is imminent.", "Biohazard Alert")
+	SSsecurity_level.set_level(SEC_LEVEL_DELTA)
+
+	// Set status displays to biohazard alert - critical level
+	send_status_display_biohazard_alert()
+	if(end_round_on_victory) // Assuming they actually *are* about to turn the station into soup...
+		max_blob_points = INFINITY
+		blob_points = INFINITY
+	else
+		to_chat(src, span_blob("You've reached critical mass, but something feels terribly wrong, stopping you from expanding further. All you can do now is fight as long as you can..."))
+		balloon_alert(src, "victory - expansion over critical mass disabled")
+	addtimer(CALLBACK(src, PROC_REF(victory)), 45 SECONDS)
+
+/// Actually *do* the blob's victory: give them their greentext and, depending on the end_round_on_victory variable, decide if everyone dies or if it's just a jumpscare.
 /mob/eye/blob/proc/victory()
 	// Set victory flags immediately
 	var/datum/antagonist/blob/B = mind.has_antag_datum(/datum/antagonist/blob)
@@ -207,13 +219,20 @@ GLOBAL_LIST_EMPTY(blob_nodes)
 		if(main_objective)
 			main_objective.completed = TRUE
 
-	to_chat(world, span_blobannounce("[real_name] consumed the station in an unstoppable tide!"))
-	SSticker.news_report = BLOB_WIN
-	SSticker.force_ending = FORCE_END_ROUND
+	if(end_round_on_victory)
+		to_chat(world, span_blobannounce("[real_name] consumed the station in an unstoppable tide!"))
+		SSticker.news_report = BLOB_WIN
+		SSticker.force_ending = FORCE_END_ROUND
 
-	// Handle the heavy victory operations asynchronously
-	INVOKE_ASYNC(src, PROC_REF(victory_sequence))
+		// Handle the heavy victory operations (where everyone dies) asynchronously
+		INVOKE_ASYNC(src, PROC_REF(victory_sequence))
+	else
+		// Is the station going boom? No. But is the station still going to get yelled at? Yes.
+		priority_announce("Experimental, classified, and very expensive emergency countermeasures have been activated to prevent total station loss, \
+			but the initial failure to contain the viral biohazard will be noted on the station's performance report. Expect further penalties.", \
+			"Emergency Biohazard Countermeasure Alert")
 
+/// Kill everyone who's still on the station area and not already part of the blob's faction, and cover every station area with blob icons. Everyone's soup now.
 /mob/eye/blob/proc/victory_sequence()
 	sound_to_playing_players('sound/announcer/alarm/nuke_alarm.ogg', 70)
 	sleep(10 SECONDS)
diff --git a/code/modules/antagonists/blob/structures/_blob.dm b/code/modules/antagonists/blob/structures/_blob.dm
index 418a6615447..819840fe458 100644
--- a/code/modules/antagonists/blob/structures/_blob.dm
+++ b/code/modules/antagonists/blob/structures/_blob.dm
@@ -157,7 +157,18 @@
 		O.do_attack_animation(A) //visually attack the whatever
 	return O //just in case you want to do something to the animation.
 
-/obj/structure/blob/proc/expand(turf/T = null, controller = null, expand_reaction = 1)
+/// Can this blob structure make further blobs? For special cases (e.g. blobs not going past crit mass count if not ending the round)
+/obj/structure/blob/proc/can_make_blob(mob/eye/blob/controller = null)
+	// If it's not being done with a controller, it's being done automatically. Because it's not player-controlled, it's not worth worrying about.
+	if(!controller)
+		return TRUE
+	// If it's not supposed to end the round and it's at the win count, don't make more. (400 tiles is still a lot to fight through...)
+	if(!controller.end_round_on_victory && (controller.blobs_legit.len >= controller.blobwincount))
+		return FALSE
+	// Otherwise, it's probably fine.
+	return TRUE
+
+/obj/structure/blob/proc/expand(turf/T = null, mob/eye/blob/controller = null, expand_reaction = 1)
 	if(!T)
 		var/list/dirs = list(1,2,4,8)
 		for(var/i = 1 to 4)
@@ -172,6 +183,9 @@
 		return
 	var/make_blob = TRUE //can we make a blob?
 
+	if(!can_make_blob(controller))
+		make_blob = FALSE
+
 	if(isspaceturf(T) && !(locate(/obj/structure/lattice) in T) && prob(80))
 		make_blob = FALSE
 		playsound(src.loc, 'sound/effects/splat.ogg', 50, TRUE) //Let's give some feedback that we DID try to spawn in space, since players are used to it