blue - water, pink - gravity, yellow - fire, green - gas
(btw, once you've completed a planet the wing arrow thing should disappear when you're in space)
epic game, hard part is where the blue and orange keys are separated from the red yellow and green ones.
its almost like you need two brains O_O
lol jk, but it does add to the challenge. nice game bro. 5/5
fantastic idea; i think the nameless city was a bit too long though. i enjoyed it at the beginning but by the end i practically didn't care as long as i got through it.