The Game Wizard is a mezzanine slot expansion card that goes into the rev. A and rev. B iMacs and accelerates 3-D rendering, which is useful for getting better frame rates in 3-D games and for visualization in 3-D modeling programs. MicroConversions, who used to sell these cards, went bankrupt last spring, but Greg Davis’ iConsult LLC company has acquired the cards and now sells them through these resellers:
Small Dog currently has them for US$169. If you think you want one of these, note that next month they might not be offered anymore if there aren’t enough sales.