If there's a real deal-breaker within Oblivion, however, it's the bugs. Lots of 'em. The worst have been problems running the game at all using Nvidia's FX series of video cards, and random, unrepeatable crashes to the desktop. I've seen creatures sometimes float in mid-air and "pop" around rather than turning to attack. There were moments when NPCs got stuck on the landscape, NPC voices would completely change between lines, and quest flags didn't getting tripped. Programming text would sometimes pop up during conversations with NPCs saying things like "Subject Change." The game's animations cause characters to move, fight, and die like a poorly wired Animatronic exhibit at Disneyland. It does little for one's sense of immersion to have beautifully expressive faces when they're attached to bodies that jerk and start in ways no humanoid body ever would and occasionally fall through a wall and twitch while hung up on the world's geometry