>>8
Admittedly, I haven't played any of id's games between Quake 3 Arena and DOOM 3, and nothing else since, but I think they only started to focus on graphics with DOOM 3 (or some time between the two). You just need to compare the two's gameplay to realize it. Q3A is basically a multi-player game with single player tacked on when you're alone. It's very fast-paced and perfect to play with friends. DOOM 3, on the other hand, is a graphics benchmark. Carmarck wrote the engine just to say "look what I can do!" The same can be said about anything by Crytek.