diff --git a/Game/Game1.cs b/Game/Game1.cs
index 5242e6a..bfcb25d 100644
--- a/Game/Game1.cs
+++ b/Game/Game1.cs
@@ -66,7 +66,7 @@ public class Game1 : Game
         engine.AddRigidBody(gameObjectBall.BehaviourController.AddBehaviour<RigidBody2D>());
         gameObjectBall.BehaviourController.AddBehaviour<MovementBallBehaviour>(new Vector2(.1f, .01f), 500f);
         gameObjectBall.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(spriteBall);
-        gameObjectBall.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2.One * 512f, Vector2.One * 512f);
+        gameObjectBall.BehaviourController.AddBehaviour<Collider2DAABBBehaviour>().AABBLocal = new AABB(-Vector2.One * 512f * .5f, Vector2.One * 512f * .5f);
 
         IGameObject gameObjectLeft = gameManager.InstantiateGameObject<GameObject>();
         gameObjectLeft.Name = "Left";
diff --git a/Game/Physics2D/Collider2DAABBBehaviour.cs b/Game/Physics2D/Collider2DAABBBehaviour.cs
index da7cc45..6e917d7 100644
--- a/Game/Physics2D/Collider2DAABBBehaviour.cs
+++ b/Game/Physics2D/Collider2DAABBBehaviour.cs
@@ -51,9 +51,9 @@ public class Collider2DAABBBehaviour : BehaviourOverride, ICollider2D
 
         vertices.Clear();
         vertices.Add(AABBWorld.LowerBoundary);
-        vertices.Add(new(AABBWorld.LowerBoundary.X, AABBWorld.UpperBoundary.Y));
+        vertices.Add(new Vector2(AABBWorld.LowerBoundary.X, AABBWorld.UpperBoundary.Y));
         vertices.Add(AABBWorld.UpperBoundary);
-        vertices.Add(new(AABBWorld.LowerBoundary.Y, AABBWorld.UpperBoundary.X));
+        vertices.Add(new Vector2(AABBWorld.UpperBoundary.X, AABBWorld.LowerBoundary.Y));
     }
 
     public Collider2DAABBBehaviour(Vector2 lowerBoundary, Vector2 upperBoundary)
diff --git a/Game/Physics2D/PhysicsEngine2D.cs b/Game/Physics2D/PhysicsEngine2D.cs
index ddcb322..4caeb41 100644
--- a/Game/Physics2D/PhysicsEngine2D.cs
+++ b/Game/Physics2D/PhysicsEngine2D.cs
@@ -3,11 +3,7 @@ using System.Collections.Generic;
 
 using Microsoft.Xna.Framework;
 
-using Pong;
-
-using Syntriax.Engine.Core;
 using Syntriax.Engine.Core.Abstract;
-using Syntriax.Engine.Graphics.TwoDimensional;
 using Syntriax.Engine.Physics2D.Abstract;
 
 namespace Syntriax.Engine.Physics2D;
@@ -41,6 +37,8 @@ public class PhysicsEngine2D : IPhysicsEngine2D
         rigidBodies.Remove(rigidBody);
     }
 
+    // List<IGameObject> gameObjects = new List<IGameObject>();
+
     public void Step(float deltaTime)
     {
         float intervalDeltaTime = deltaTime / IterationCount;
@@ -54,25 +52,38 @@ public class PhysicsEngine2D : IPhysicsEngine2D
             foreach (var collider in colliders)
                 collider.Recalculate();
 
+            // foreach (var gameObject in gameObjects)
+            //     Game1.gameManager.RemoveGameObject(gameObject);
+            // gameObjects.Clear();
+
+            // foreach (var collider in colliders)
+            //     foreach (var vertex in collider.Vertices)
+            //     {
+            //         GameObject gameObject = Game1.gameManager.InstantiateGameObject<GameObject>();
+            //         gameObject.BehaviourController.AddBehaviour<DisplayableSpriteBehaviour>().Assign(Game1.spriteBox);
+            //         gameObject.Transform.Position = vertex;
+            //         gameObjects.Add(gameObject);
+            //     }
+
             for (int i = colliders.Count - 1; i >= 0; i--)
                 CheckCollisions(colliders[i], colliders, (c1, c2) =>
                 {
-                    if (c1.RigidBody2D is IRigidBody2D c1RigidBody) c1RigidBody.Velocity = -c1RigidBody.Velocity;
-                    if (c2.RigidBody2D is IRigidBody2D c2RigidBody) c2RigidBody.Velocity = -c2RigidBody.Velocity;
+                    if (c1.RigidBody2D is IRigidBody2D c1RigidBody) { c1RigidBody.Velocity = -c1RigidBody.Velocity; StepRigidBody(c1RigidBody, intervalDeltaTime); c1.Recalculate(); }
+                    if (c2.RigidBody2D is IRigidBody2D c2RigidBody) { c2RigidBody.Velocity = -c2RigidBody.Velocity; StepRigidBody(c2RigidBody, intervalDeltaTime); c2.Recalculate(); }
                 });
         }
     }
 
     private void CheckCollisions(ICollider2D collider2D, List<ICollider2D> collider2Ds, Action<ICollider2D, ICollider2D> OnCollisionDetectedAction)
     {
-        for (int i = collider2Ds.Count - 1; i >= 0; i--)
+        for (int i = 0; i < collider2Ds.Count; i++)
         {
             ICollider2D collider2DItem = collider2Ds[i];
             if (collider2DItem == collider2D)
                 continue;
 
-            foreach (var vertex in collider2DItem.Vertices)
-                if (collider2D.CheckCollision(vertex))
+            for (int y = 0; y < collider2DItem.Vertices.Count; y++)
+                if (collider2D.CheckCollision(collider2DItem.Vertices[y]))
                     OnCollisionDetectedAction?.Invoke(collider2D, collider2DItem);
         }
     }