Rampant Planet is a game based on the theory that big balls swallow small balls to survive and become stronger. There are two modes in the game: Leisure Mode and Fighting Mode. In leisure mode, the trigger for every unique incident makes it adventurous and exciting to challenge your extreme reaction. In the fighting mode, you will fight with real players, and you will survive as long as you get strong, and here are many players competing for No. 1 in the game.