A multiplayer-only spinoff of the series, Wolfenstein: Enemy Territory, was originally planned as a full-fledged expansion pack for Return to Castle Wolfenstein developed by Splash Damage. The single-player component of the game was never completed and thus was removed entirely. The developers at that point decided the multiplayer part would be released as a free, downloadable standalone game. Enemy Territory is a team-based networked multiplayer game which involves completing objectives through teamwork using various character classes.
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