Thanks for the feedback. I'm hoping to remove as much of the dexterity part of the game as possible but due to the nature of physics puzzlers I doubt it's impossible to remove entirely. I've added in a wipe cube button which should act as a "retry" button by clearing the cube of all lines. I have managed to fix up most of the physics and the game should now act in a more determinate way, I never really paid much attention to this part of the game so I appreciate the feedback as I didn't notice it until you and a few others pointed it out. The ball now does go back and forth on the level you mentioned although it doesn't do so infinitely so it still needs a bit of work but now goes back and forth exactly 6 times before breaking out of the loop every time. The issue of strange ball movement in both instances you mentioned were caused by the cube pushing on the ball during rotation, silly physics mistake that I never considered, and should now be mostly fixed. The cube rotation with the spin key changing directions is caused by the game trying to move the cube in the shortest direction to the destination. I'll look into fixing this.