I was impressed with that game as well. It seems to incorporate Viewtiful Joe style 2D, especially for boss battles. It is a great time to get a DS now that the truly great stuff is either already released or coming within the next three months. (Wario Ware Touched, Meteos, Kirby, the new Mario game, Sonic Rush, Viewtiful Joe, and Castlevania, one of the most hotly anticipated games for the DS since its launch.)