Party and the "Third Reich", in order to comply with strict laws in Germany. The player is not battling Nazis but a secret sect called the "Wolves" led by Heinrich Höller, whose name is a pun of the original character Himmler (Himmler roughly translates as "Heavener", Höller as "Heller"). The Nazi swastika is also not present: the German forces use a Wolfenstein logo which is a combination of a stylized double-headed eagle prominent in most Nazi symbolism, a "W" (standing for Wolfenstein), and the Quake III: Team Arena "QIII" logo (the game engine and network code that Return to Castle Wolfenstein is based upon). The "W" eagle logo is prominently seen on the cover art for the American version. Music pieces such as Beethoven's Moonlight Sonata and Für Elise are used in the single-player campaign. Some sound effects in the game are excerpts heard in the 1968 movie 2001: A Space Odyssey. A radar station and the X-Labs levels of the game feature these sounds prominently to give the effect of working scientific equipment at a research facility. The game is powered by a modified version of the id Tech 3 engine, with changes made to support large outdoor areas. The Return to Castle Wolfenstein engine was subsequently used as the foundation for Wolfenstein: Enemy Territory (Splash Damage/Activision), Trinity: The Shatter Effect (Gray Matter Studios/Activision) (shown at E3 in 2003, but assumed cancelled) and Call of Duty (Infinity Ward/Activision). There are many different releases of Return to Castle Wolfenstein. The original release, version 1.0, came in a game box featuring a book-like flap. A Collector's Edition, packaged in a metal case, was released at the same time. The contents of the Collector's Edition changed depending on when it was purchased and could include a poster and fabric patch, a poster and a bonus CD, or just the bonus CD. The Game of the Year Edition (2002 - v.1.33) came with the original Wolfenstein 3D, game demos, and seven new multiplayer maps (Trenchtoast, Tram Siege, Ice, Chateau, Keep, The Damned, and Rocket.) The Platinum Edition (2004 - v.1.41) included Wolfenstein: Enemy Territory, a stand-alone multiplayer expansion, and Wolfenstein 3D. Return to Castle Wolfenstein: Tides of War also came with the original Wolfenstein 3D as an unlockable after beating the campaign, and included some enhancements like surround sound. Ports The game was released for Linux and Macintosh platforms in 2002, with the