Great concept. That gun is too accurate and it push me back a lot of time (I beat it eventually). I think the game play would be better if I could pretty how far/how high would I jump. For example in moon gravity mode set it so that it would only jump 5 units high across all level, and then build levels around that. In this way I could at least predict how far would I go. But oh well, the theme is out of control and it really got out of control.