Jumpin' Jack is a red ball, which jumps under your control across a pattern of green platforms. This platforms will disappear, if he leaves it. He can't jump diagonally, only straightly. He can jump to an adjective platform or over it or over an empty space to the next platform. He won't be able to jump over a longer distance. If he jumps to an empty place, he falls and the level is lost. If only one platform is left, the jump brings him to the next level. The point of the game is to plan Jack's way carfully so that he will reach all platforms. In 200 levels you can prove your talent in planning.