When Uncle Grandpa accidentally travels through multiple dimensions with the UG-RV, he picks up some surprise passengers in the form of Gumball, Steven Universe, Finn, Mordecai, and Clarence. Now they must team up to defeat the evil shard creatures and set things right. Use each character's unique attacks and special moves to overcome the elements, battle through all levels, and conquer some brutal boss fights. Replay cards with special modifiers to enhance the fun and unlock bonus rooms along the way.