Personally I find Onechanbara: Bikini Zombie Slayers to be an under rated game, considering the amount of features the titles has in it, and the way it plays as an RPG with the use of items in combat etc. I would say it has quite a lot of features for a Nintendo Wii title.
Plus the game has a load of replayability in terms of re-doing levels on different difficulty levels, free mode etc..
Who is with me!?