id Software has started Quakecon on a great note by releasing sources for Return to Castle Wolfenstein (RTCW). RTCW may be one of the most addictive multiplayer games I have had the pleasure of playing. My friend and I kept playing it together when we were in our teens and even bought 128MB of RAM just to get the game to load faster.
Click here to get the sources. It’s on id Software’s FTP servers.