diff --git a/code/__DEFINES/mobs.dm b/code/__DEFINES/mobs.dm
index 94b22d55ba7..7b4ec0bc36e 100644
--- a/code/__DEFINES/mobs.dm
+++ b/code/__DEFINES/mobs.dm
@@ -329,6 +329,9 @@
 //Slime extract crossing. Controls how many extracts is required to feed to a slime to core-cross.
 #define SLIME_EXTRACT_CROSSING_REQUIRED 10
 
+//How many slimes can be on the same tile before it can no longer reproduce.
+#define SLIME_OVERCROWD_AMOUNT 2
+
 //Slime commands defines
 #define SLIME_FRIENDSHIP_FOLLOW 3 //Min friendship to order it to follow
 #define SLIME_FRIENDSHIP_STOPEAT 5 //Min friendship to order it to stop eating someone
diff --git a/code/modules/mob/living/basic/slime/actions.dm b/code/modules/mob/living/basic/slime/actions.dm
index c297f48d14e..a3168d81437 100644
--- a/code/modules/mob/living/basic/slime/actions.dm
+++ b/code/modules/mob/living/basic/slime/actions.dm
@@ -77,6 +77,7 @@
 
 ///Splits the slime into multiple children if possible
 /mob/living/basic/slime/proc/reproduce()
+
 	if(stat != CONSCIOUS)
 		balloon_alert(src, "not conscious!")
 		return
@@ -92,6 +93,19 @@
 		balloon_alert(src, "need growth!")
 		return
 
+	var/list/friends_list = list()
+	for(var/mob/living/basic/slime/friend in loc)
+		if(QDELETED(friend))
+			continue
+		if(friend == src)
+			continue
+		friends_list += friend
+
+	overcrowded = length(friends_list) >= SLIME_OVERCROWD_AMOUNT
+	if(overcrowded)
+		balloon_alert(src, "overcrowded!")
+		return
+
 	var/list/babies = list()
 	var/new_nutrition = round(nutrition * 0.9)
 	var/new_powerlevel = round(powerlevel / 4)
diff --git a/code/modules/mob/living/basic/slime/slime.dm b/code/modules/mob/living/basic/slime/slime.dm
index 8623f69b0e4..8f80e24f699 100644
--- a/code/modules/mob/living/basic/slime/slime.dm
+++ b/code/modules/mob/living/basic/slime/slime.dm
@@ -66,6 +66,9 @@
 	///Our slime's current mood
 	var/current_mood = SLIME_MOOD_NONE
 
+	///If the slime is currently overcrowded and unable to reproduce.
+	var/overcrowded = FALSE
+
 	///The number of /obj/item/slime_extract's the slime has left inside
 	var/cores = 1
 	///Chance of mutating, should be between 25 and 35
@@ -243,6 +246,8 @@
 
 		if(SLIME_MAX_POWER)
 			. += span_boldwarning("It is radiating with massive levels of electrical activity!")
+	if(overcrowded)
+		. += span_warning("It seems too overcroweded to properly reproduce!")
 
 ///Changes the slime's current life state
 /mob/living/basic/slime/proc/set_life_stage(new_life_stage = SLIME_LIFE_STAGE_BABY)