Episode III - Revenge of the Sith. It's Lego, it's Star Wars... it's Lego Star Wars! Full playthrough of all three episodes, and free play to get the Death Star Plans you can't get in Story mode.
From Wikipedia:
LEGO Star Wars is a Lego theme that incorporates the Star Wars saga. The first Lego Star Wars, released in 1999, included model 7140, the first Lego X-Wing. Learn about LEGO Star Wars
