Hot on the heels of the recent Doom 3 v1.3 patch, Bernd Kreimeier, whom you may recall as the force behind cleaning up the Doom source code for release in the first place, has ported Doom to Doom 3. Yes, you can literally play Doom on an arcade screen inside of a Doom 3 level. No, I don't know how either. Yes, I baked those cookies. No, you can't have one.