In the seabed world, is a law of the jungle place, the game as soon as starts you is only a small fish, only has unceasingly eats compared to you also small fish, can grow into the big fish oh, along with the game advancement, latter appears various fish, but also has the terror shark, after but eats some fish also to be able to have the different response oh, after the yellow goldfish ate has been able rapidly to grow up, after the poisoned fish ate has been able to lose control and so on, but also had to use each kind of stage prop, could gain the victory oh. Direction keys control.