Is There a 'Star Wars: The Complete Saga' Game on PS2? No, But Many Standalone Titles Exist

No single game with that title exists on PS2. The PS2 library includes many standalone Star Wars titles:

Major PS2 Star Wars Games

• Knights of the Old Republic (KOTOR) – RPG, 4000 BBY.
• Knights of the Old Republic II – Sequel, darker story.
• Jedi Starfighter – Arcade space combat.
• Bounty Hunter – Third-person Jango Fett action.
• Republic Commando – Tactical FPS (Clone Wars).
• Battlefront / Battlefront II (2004/2005) – Large-scale battles, instant action, Galactic Conquest.
• Episode III: Revenge of the Sith – Hack-and-slash movie tie-in.
• The Force Unleashed (2008) – Force-powered action (PS2 version differs from PS3/360).
• Lego Star Wars I & II / Complete Saga – Family-friendly puzzle-platformer.

For a "complete saga" feel, Lego Star Wars: The Complete Saga covers Episodes I–VI in one package.