When they said doom3 would be an update to the original they weren't kidding. The basic gameplay is exactly the same. Shoot, run, get health, unlock doors, shoot and repeat. The real difference is in how scary the game is now. The lighting and the aggressive enemies really make you jump...nearly afraid to open the next door. The game is beautiful and I've taken time to look around--especially when I have a chance to look across the martian landscape. But deep down I hope this is just Id prepping their new graphics engine. Everytime I saw a vehicle I wanted to drive it. I'm tired of listening to audio playbacks and reading emails to get door codes. Games like Farcry, unreal tournament and Chronicles of Riddick have really pushed FPS games in variety and storytelling. Hopefully when Id does another Quake game they won't go the nostalgia route and give us a title with game to go with the graphics.