LEGO Star Wars: The Complete Saga combines LEGO Star Wars: The Video Game and LEGO Star Wars II: The Original Trilogy into a single game with several new features.

Players can access all the six Star Wars movies from the game's "hub" location, Mos Eisley Cantina. Unlocked characters can be taken to explore previously visited stages from both the original and prequel trilogy. New characters have been added, including Indiana Jones; the total amount of characters in this release is 160.

Most of the changes involve the first installment, which has been updated with a few features bringing its gameplay closer to that of the sequel. Two levels that were deleted from the first release are now available as bonus stages. There are new vehicle bonus missions as well as ten additional bounty hunter missions. Red power bricks from the second game are now available in the first as well. Characters from the prequel trilogy can now build and ride vehicles, as well as wear helmets. Players can also gain access to bounty hunter and stormtrooper areas. Characters have different melee attacks and can also dodge blaster fire. New Jedi Force moves (force choke and force lightning) are included.

A new two-player Battle Arena mode is available in this release. Online play has been added for Xbox 360 and PlayStation 3 platforms.