diff --git a/gamedata/objects/ingame/manager.py b/gamedata/objects/ingame/manager.py
index 0eb6c2f..37a4b0b 100644
--- a/gamedata/objects/ingame/manager.py
+++ b/gamedata/objects/ingame/manager.py
@@ -65,16 +65,19 @@ class Manager(BaseObject):
                 self.can_sfx = True
         lemmings = self.game.gameloop.findname("Lemming")
         nblemmings = len(lemmings) + len(self.game.gameloop.findname("Spawner"))
-        # Updating score
+        # Updating score and checking if there's only monsters
+        nbmonsters = 0
         if not self.game.globals["pause"]:
             for lemming in lemmings:
+                if lemming.skin == "monster":
+                    nbmonsters+=1
                 if not lemming.selected:
                     self.score+=lemming.scoreratio*self.game.dt
         # Pausing the game
         if self.game.inputs["keys"]["escape"]["timer"]==1:
             self.game.globals["pause"] = not self.game.globals["pause"]
         # Spawning more lemmings
-        if (self.lives>0 and nblemmings>0):
+        if (self.lives>0 and nblemmings>0 and (nbmonsters!=nblemmings)):
             if not self.game.globals["pause"]:
                 if self.spawntimer.tick(self.game.dt):
                     self.game.gameloop.summon(Spawner(self.game,self.tiles,speedmargin=int(self.speedmargin+0.5),skins=self.skins))