Return to Castle Wolfenstein (PC)
Wolfenstein is well worth it for the multiplayer game alone, so the fact that you get a solid single-player game in the box can only be considered a bonus.
Score: 9.2

Return to Castle Wolfenstein: Enemy Territory (PC)
While the retail single-player expansion was cancelled, id released the multiplayer component as a free download.

Wolfenstein 3D (PC)
This masterpiece of wild action and unbelievable graphics brings you virtual reality at its best, as you move through a sensationally realistic 3-D world of amazing detail. It's World War II, and you are B.J. Blazkowicz - the Allies' bad boy of espionage, a terminal action seeker gulit for abuse with an attitude to match. There's just one small problem: you've been captured by the Nazis, tortured, and imprisoned beneath the Castle Wolfenstein where you await execution. Bummer. Now, you must do anything to escape from the belly of a Nazi dungeon - or die trying.