Return to Castle Wolfenstein
Return to Castle Wolfenstein is a first-person shooter video game published by Activision, released on November 19, 2001 for Microsoft Windows and subsequently for PlayStation 2, Xbox, Linux and Macintosh. The game serves as both a remake and a reboot to the "Wolfenstein" series. It was developed by Gray Matter Interactive and Nerve Software developed its multiplayer mode. id Software, the creators of "Wolfenstein 3D", oversaw the development and were credited as executive producers. The multiplayer side eventually became the most popular part of the game, and was influential in the genre. Splash Damage created some of the maps for the Game of the Year edition. A sequel, titled "Wolfenstein", was released on August 18, 2009.
Wolfenstein: Enemy Territory
Wolfenstein: Enemy Territory is a free and open-source multiplayer first-person shooter video game set during World War II. It was originally planned to be released as a commercial expansion pack to "Return to Castle Wolfenstein" and later as a standalone game. However, due to problems with the single-player aspect, the multiplayer portion was released on 29 May 2003 as a freeware standalone game. In January 2004, the source code for the game logic (not the game engine) was released to the benefit of its modding community.