The objective of the game is to successfully progress through each episode while collecting Gold Bricks. The Complete Saga spans the events that take place from the Trade Federation negotiations above Naboo in Star Wars Episode I - The Phantom Menace (1999) to the Rebel attack on the second Death Star above Endor in Return of the Jedi (1983).
Like in Lego Star Wars II: The Original Trilogy, the hub world takes place in the Mos Eisley Cantina. The Cantina has doors that allow the player to enter the levels for Episodes I-VI, the bonus levels, the Bounty Hunter missions, and the Arcade games. The Cantina features a character customizer, a key feature from Lego Star Wars II.
In all versions of the game except for the Nintendo DS version, there are 160 gold bricks to collect; 120 of these are for the main levels. There are three for each of the levels. One is for completing the level in story mode, the second is for achieving "True Jedi" status by collecting a certain amount of studs/coins, and the third is by collecting 10 LEGO "minikit" canisters, which are hidden across the level. For iOS, there are 200 Gold Bricks overall with an additional gold brick available for each level with the completion of a challenge mode where the player must find the 10 hidden blue Minikits in 20 minutes. The iOS version also offers 12 gold bricks by completing the arcade games in the lobby.
There are 20 gold bricks for completing the Bounty Hunter missions, which involve capturing key figures of the Old Republic and Rebellion for Jabba the Hutt. There are 6 further gold bricks for completing the bonus missions (10 in the iOS version) and another 14 available to purchase at the Cantina (8 in the iOS version).
Overall, there are 36 main story levels (six per episode), 20 bounty hunter missions, and six bonus levels. The six bonus levels include two Lego City levels ("Lego City" and "New Town", with the former originally appearing in Lego Star Wars II: The Original Trilogy), two story levels ("Anakin's Flight" and "A New Hope", the latter of which was a special unlockable level found in Lego Star Wars: The Video Game), and the original versions of the "Mos Espa Podrace" and "Gunship Cavalry" levels.
