Clu Clu Land

In Clu Clu Land, the player is a female balloonfish named Bubbles, known as Gloopy in Japan, who swims around in a maze trying to uncover all the golden Ingots.

Played through two loops, after level 21 you get to replay the same levels from before, only that you need to pay attention to the gold tiles, which can flip to a dull side and need to be flipped once again to complete the level.