Well i've got an iMac x1600 256, 2.16, 2gb ram and i want to get a game cos holidays are about to start. I figure the graphics card is not exactly brilliant so which game should i get? Oblivion (btw what's vanilla oblivion?) The Witcher or maybe Assassin's Creed? Will my iMac be able to run it decently e.g. smooth frame rates but still be able to maintain some semblance of graphical magnificence?