STAR WARS Jedi Knight - Mysteries of the Sith is a first-person shooter game that serves as a full-fledged expansion of the Star Wars Jedi Knight: Dark Forces 2. It is developed by LucasArts Entertainment and is available for the Windows platform. The game is set in the Star Wars universe and follows the story of the protagonist, Mara Jade, a Jedi apprentice on a mission to find a Sith temple.

The game has 14 levels and 13 locations for multiplayer battles. The single-player story has a single positive route, and players don't have a moral choice system, unlike the original game. Players can switch between first-person and third-person perspectives. In addition to ranged weapons like blasters, players can also use lightsabers and force powers. The multiplayer mode supports up to eight players who can fight as characters from Star Wars films.