This game might be 2D, about 4 years old (This game premeared on Sega Saturn), and the idea is kinda strange, but this is a GREAT game!  At first  it starts out quite easy (You'll beat the first 5 levels in less than 2  minutes) but soon you're wondering if there is a way to beat the game.  Heck, before you know it you'll buy the stratigy guide to try and figure  out what to do next.  This game has given me more of a challange in gaming  than Lara Croft did in Tomb Raider.  I highly recomend this game.  Now  where is a copy for Dreamcast?  Huh, Sega?