Character Tweaks. The removel of Angel, K9999, Seth(Who I think should be in the game because 1) He's black, 2) He's badass) Ramon, Vanessa, May Lee and Kim. The combo system is realitivly the same. The only character with a new move is Saishu, although his move is made up of existing anims(LAME!) The only thing realtively new is the new "HEAT" system which replaces the old system used in 2k2. Heat enables you do to a "special" move (nothing new yet again) and could certainly turn the tables during a game.