diff --git a/main.py b/main.py
index b3e2b12..21a7c84 100644
--- a/main.py
+++ b/main.py
@@ -170,8 +170,12 @@ def main():
                 environment.ground,
                 environment.offset) # if perlin, offset = 0, if basic, offset = environment.offset
 
-        #creature_instance.render(screen)
-        for creature in creatures:
+            if creature.limbs[0].body.position.y > SCREEN_HEIGHT:
+                # kill the creature
+                creatures.remove(creature)
+            if creature.limbs[0].body.position.x < environment.death_ray.get_x():
+                # kill the creature
+                creatures.remove(creature)
             creature.render(screen)
             
         clock.tick(60)
diff --git a/src/agent.py b/src/agent.py
index 5c31f38..1ba7585 100644
--- a/src/agent.py
+++ b/src/agent.py
@@ -7,8 +7,8 @@
 from src.environment import Environment
 from src.render_object import RenderObject
 
-from src.agent_parts_old.limb import Limb, LimbType, limb_factory
-from src.agent_parts_old.creature import Creature, creature_factory
+from src.agent_parts.limb import Limb, LimbType, limb_factory
+from src.agent_parts.creature import Creature, creature_factory
 
 
 class Agent(ABC):
diff --git a/src/environment.py b/src/environment.py
index 8698dc6..9a309bd 100644
--- a/src/environment.py
+++ b/src/environment.py
@@ -36,6 +36,7 @@ def __init__(self,  screen, space):
 
         self.offset = 0
         self.offset_speed = 1
+        self.death_ray = DeathRay(20)
 
     def ground_factory(self, ground_type: GroundType) -> Ground:
 
@@ -61,9 +62,12 @@ def update(self):
         self.ground.update(self.offset)
         # self.ground.move_segments(self.offset/100)
         self.starting_xx += 1
+        self.death_ray.move(0.1)
+        
 
     def render(self):
         self.ground.render()
+        self.death_ray.render(self.screen)
 
     def run(self):
 
@@ -106,5 +110,25 @@ def run(self):
     def draw_mark(surface, color, coord):
         pg.draw.circle(surface, color, coord, 3)
 
+class DeathRay:
+    x: int
+    
+    def __init__(self, x: int):
+        self.x = x
+    
+    def update(self, x: int):
+        self.x = x
+        
+    def render(self, screen):
+        pg.draw.line(screen, RED, (self.x, 0), (self.x, SCREEN_HEIGHT), 2)
+        
+    def move(self, offset: int):
+        self.x += offset
+        
+    def get_x(self):
+        return self.x
+    
+    
+