Not all platforms are what they seem in this fun skill game! In each level the red cube goes in search of the key: he needs it to open the door. On certain platforms he can only jump once: once he's touched them, they get the same color as he has and they won't support him anymore. He'd just fall through them, towards the dangerous, black oil... The block can change color by standing on a bucket of paint. Do this at the right moment, though, otherwise it will be useless!
Arrow keys = move (and jump).