--- a/mamba/__main__.py	Sun Sep 11 13:05:26 2011 +0200
+++ b/mamba/__main__.py	Sun Sep 11 13:11:52 2011 +0200
@@ -6,6 +6,7 @@
 from pygame.locals import SWSURFACE
 
 from mamba.constants import SCREEN
+from mamba.engine import Engine
 
 # For future use
 DEBUG = False
@@ -22,9 +23,5 @@
     pygame.display.set_mode(SCREEN, SWSURFACE)
     pygame.display.set_caption('Mamba')
 
-    # Placeholder to do something for some time
-    import time
-    time.sleep(2)
-
-
-
+    engine = Engine()
+    engine.run()

--- a/mamba/engine.py	Sun Sep 11 13:05:26 2011 +0200
+++ b/mamba/engine.py	Sun Sep 11 13:11:52 2011 +0200
@@ -0,0 +1,21 @@
+"""Game engine and top-level game loop."""
+
+import pygame.event
+import pygame.display
+from pygame.locals import QUIT
+
+
+class Engine(object):
+    def __init__(self):
+        pass
+
+    def run(self):
+        """Game loop."""
+        get_events = pygame.event.get
+        flip = pygame.display.flip
+        while True:
+            events = get_events()
+            for ev in events:
+                if ev.type is QUIT:
+                    return
+            flip()