It seems like a good game, but the level is so huge that I keep getting lost. It's way too easy to fall straight back down to the bottom, often into a color bin so that I not only have to find my way back up, I also have to find the color I wanted to be. A level map would help a lot, and if you want to keep the challenge, make it available only in certain spots (sorta like "You are here"), or only for a minute at a time, with a recharge period before we can check again. The wall-jumps seem a little off somehow, they don't work every time so I keep falling right back down to the bottom. The music is good, it fits the tone of the game perfectly.