Simply pressing on the button that resembles a hammer in the bottom left corner of the screen will allow you to choose what mode of prank battle you want to participate in.

Marvin's Invasion
In this game mode you won't be playing against other players, but instead against the game itself. This mode is available right from the start and allows you to gather toon pieces and materials here to help expand your roster of toons.

Competitive Play
The stakes are highest in competitive play, as you battle to steal crates from other players, add them to your banks to defend, and claim the best loot possible! Winning here also earns you trophies that increase your overall leaderboard standing. Fight your way to the top for the prestige of proclaiming yourself the best in the World of Mayhem.