Crypt of the Necrodancer

Sean I haven't seen this suggested, but I also haven't dug deep enough in your forum.  In either case, what about Crypt of the Necrodancer?  It can be played single player or multiplayer with JP and its got some of the catchiest music I've heard in a game in a while.  Look up Crypt of the NecroDancer Alpha OST - King Konga as an example.  The sprite animation will probably make you laugh too.