Adventure Time Battle Party is an Adventure Time MOBA that is actually pretty fun. There are 15 characters and many costumes and stuff. It's really hard to explain, but think of it as Adventure Time meets League of Legends. Here's a link to play the game:

http://www.cartoonnetwork.com/games/adventuretime/adventure-time-battle-party/

NOTE: I think that only North Americans can play this. Sorry any foreigners.

Does not work I'm in Canada and that is in North America...