diff --git a/aoe/world.py b/aoe/world.py
index 2bb846d..d030494 100644
--- a/aoe/world.py
+++ b/aoe/world.py
@@ -332,7 +332,8 @@ class World():
 
 
     def _get_population_space(self):
-        return sum([self.housing.space[building] for building in self.buildings])
+        space = sum([self.housing.space[building] for building in self.buildings])
+        return min(space, 200)
 
 
     def _get_effective_population(self):