Controls are easy... no offense to the people who can't understand them. The reason you could connect some on one side and not the other is because there is a max length for connectors, and you are going right under/over on opposing sides.
Disco level too easy. First level almost luck-based, as the floor dissapearing when you jump makes it near impossible.
Thought I was supposed to jump on the boss' head to kill him, lost 2 lives. Might want to put a text up that you shouldn't do that.
I think this game would be a lot more fun if there were more arrows, instead of the arrows popping off in random places. Kind of fun, but the some of the arrows are a little off beat which makes following fast changes quite difficult.
If this game didn't have bugs it would be a lot of fun. Unfortunately, when i bought upgrades over level 1 they didn't show up or make any noticable effect and my permanent upgrades became unpermanent and disapeered after 1 round.
Needs a menu button... again.
My main problem with the physics is that the planets seem to have attractions that are not relative to their size. It would be awesome if there were numbers on the planets telling the player the relative force that each planet puts on the ball.