Star Wars: Jedi Knight - Mysteries of the Sith is a package of add-ons prepared for the action game Star Wars: Jedi Knight: Dark Force II, the action of which takes place in the world of star wars. The plot takes place five years after the events where Kyle defeated the seven dark Jedi. Mara Jane, intrigued by Kyle's heroism, decides to come to the outpost on Altar 5 in order to get acquainted with the protagonist, unfortunately this rebel outpost is being attacked by Imperial forces. Kyle goes towards an unknown Sith temple, while Mary, while waiting for Kyle, decides to complete several missions, which introduces her to a very interesting world full of amazing adventures. We get 29 missions in the game, 14 of which we will play in single player mode, and we also get a completely new character, which is the aforementioned Mary. On our way we will meet as many as 20 new opponents against whom we can use 5 completely new powers. Additionally, 15 new maps have been prepared for the multiplayer mode.