diff --git a/gamedata/objects/ingame/lemmings.py b/gamedata/objects/ingame/lemmings.py
index b66fd28..fb8d97b 100644
--- a/gamedata/objects/ingame/lemmings.py
+++ b/gamedata/objects/ingame/lemmings.py
@@ -30,6 +30,9 @@ class Lemming(BaseObject):
         self.spriteindex = 0
         self.animspeed = 0.2
 
+        self.tiles = game.gameloop.findname("Tiles")[0]
+        self.manager = game.gameloop.findname("Manager")[0]
+
     def step(self):
 
         # Depth updating based on position
@@ -69,6 +72,19 @@ class Lemming(BaseObject):
 
         # Animation
         self.spriteindex+=self.game.dt*self.animspeed*self.speed
+
+        # Check if still on ground
+        gridx = int((self.rect.center[0]-self.tiles.rect[0])/self.tiles.cellsize)
+        gridy = int((self.rect.center[1]-self.tiles.rect[1])/self.tiles.cellsize)
+        dead = True
+        if 0<=gridy<len(self.tiles.grid):
+            if 0<=gridx<len(self.tiles.grid[gridy]):
+                if self.tiles.grid[gridy][gridx]==1:
+                    dead = False
+        if dead:
+            self.manager.death()
+            self.game.gameloop.delid(self.id)
+
     def launch(self):
         # Launch itself in the mouse direction
         if len(self.cachedrel)>self.mincachedsize:
diff --git a/gamedata/objects/ingame/manager.py b/gamedata/objects/ingame/manager.py
index 53a9399..3609526 100644
--- a/gamedata/objects/ingame/manager.py
+++ b/gamedata/objects/ingame/manager.py
@@ -12,6 +12,8 @@ class Manager(BaseObject):
         self.speedmargin = 6
         self.stepmargin = 0.4
         self.spawntimer = game.lib.Timer(self.basetime) # Time elapsing each lemming spawn
+        self.deathtimer = game.lib.Timer(1) # Time betwin each life loss
+        self.invincible = False
         self.scoreratio = 0.4 # Points earned per seconds and per lemming
 
         # Summon the tiles
@@ -22,14 +24,27 @@ class Manager(BaseObject):
         self.game.gameloop.summon(Spawner(self.game,self.tiles))
 
     def step(self):
-        for i in self.game.gameloop.findname("Lemming"):
+        nblemmings = len(self.game.gameloop.findname("Lemming"))
+        # Updating score
+        for i in range(nblemmings):
             self.score+=self.scoreratio*self.game.dt
-        if self.spawntimer.tick(self.game.dt):
+        # Spawning more lemmings
+        if self.lives>0 and nblemmings>0 and self.spawntimer.tick(self.game.dt):
             self.game.gameloop.summon(Spawner(self.game,self.tiles,speedmargin=int(self.speedmargin+0.5)))
             self.basetime+=self.steptime
             self.spawntimer = self.game.lib.Timer(self.basetime)
             self.speedmargin+=self.stepmargin
 
+        if self.invincible:
+            if self.deathtimer.tick(self.game.dt):
+                self.invincible = False
+        print(self.lives)
+
+    def death(self):
+        if not self.invincible:
+            self.lives-=1
+            self.invincible = True
+
     def draw(self):
         pass