diff --git a/Welt.java b/Welt.java
index 2887dac..b9cd519 100644
--- a/Welt.java
+++ b/Welt.java
@@ -6,7 +6,7 @@ class Welt implements Drawable
     private static final int DISTANCE = 250;
     private final ArrayList<Rectangle> _obstacles;
     private double _speed = 150;
-    private double _acc = 0.5;
+    private double _acc = 2;
     private final Random _random;
 
     public Welt(Manager manager)