This meant that a lot of planned content in various states of completion was ultimately cut from the final retail release of the game. The team resorted to extensive overtime in order to meet the revised deadline. According to Urquhart, the game was originally meant to be released in 2005, but it was later moved up to December 2004 following E3 2004. Wanting to capitalize on the success of BioWare's 2003 video game Star Wars: Knights of the Old Republic, publisher LucasArts gave the team less than one and a half years to complete the project using the same engine and assets as its predecessor. Released on December 6, 2004, Star Wars Knights of the Old Republic II: The Sith Lords is the first game developed by Obsidian Entertainment, with a small core development team of seven former employees of Black Isle Studios led by Obsidian CEO Feargus Urquhart. See also: Star Wars Knights of the Old Republic II: The Sith Lords § Development TSLRCM has been acknowledged and praised by multiple video game publications as essential for a satisfactory gameplay experience of The Sith Lords, especially after the implementation of Steam workshop support for the game in July 2015. As of 2015, the mod is endorsed and supported by Aspyr Media, Inc., an American video game developer and publisher responsible for the continued support of The Sith Lords on modern platforms.

The mod's first public release was in September 2009. A years-spanning project that aims to improve the gameplay experience of The Sith Lords as intended by its developer, TSLRCM is developed by a group of fans who pieced together disparate narrative elements through data extracted from the game's fragmented code.

The Sith Lords Restored Content Modification, often abbreviated as TSLRCM, is a fan volunteer effort to reinstate or recreate unused content for the 2004 video game Star Wars Knights of the Old Republic II: The Sith Lords and fix a vast number of technical issues present in the retail release of the game.

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