I'm bouncing between
Space Marine - which I think is a fine hack & slash game, though the cheap dogpile kills make it tiresome. I think if they had added a HelloKitty skin option this game would be WAYYY better...
9 hours 9 people 9 doors - which I think is the best story driven game I've ever played. I really like these comic book style DS games... I think this market could be explored ALOT more
Saints Row the Third - not as customizable as 2, but still a heck of a lot of fun. The quasi-super-powered enemies are a nice diversion.