Empty.

In the world of "EMPTY", Earth is flat. You will be controlling "Master Humpback". Jump through each level and collect "RED CORE". All you have to do is to collect 25 "RED CORE". Sound easy? But it's actually EXTREMELY challenge. Here's the thing; you only have 60 seconds each level. Time's up, you lose. Hit your character's head, you lose. So, mastering the controls, such as how to hover in the air, or remembering the map, are crucial to beat the game.