Duke3D is one of those weird games where I don't respect it as much as Doom or Quake, but I have to admit I've had a lot of fun playing it at different points in my life. Some seriously great memories deathmatching with friends on the opening map, and the combat in the single player is often really good.

I honestly think DUKE3D is better than either of them. The levels actually look like what they're supposed to be, instead of abstract corridors with nonsensical props strewn about, as in DOOM. It could also be my habits, but I also find the DUKE3D's movement is superior to QUAKE's. I always feel like I overshoot my target position in QUAKE.