The Land of Ooo has been transformed into a giant video game, and BMO has been kidnapped. In Adventure Time: Finn & Jake's Epic Quest
you will brawl your way through the Witch's garden, Ice Kingdom, Fire Kingdom, and even the Land of the Dead itself to rescue BMO and uncover the evil mastermind. You will battle four terrifying bosses and loads of nasty enemies from the show, including Hug Wolf and Tree Witch; and you will collect secret spells to unleash algebraic attacks, like NEPTR, Jake's Puppies, Knife Storm, and many more.
A few screenshots
and a video are available for your viewing pleasure.