Phantasy Star Universe: Ambition of the Illuminus is the expansion pack for Phantasy Star Universe. In addition to new enemies, weapons, levels, and cities, there will be more options available to individualize and customize further the look of players.

      Ambition of the Illuminus  contain the following new features:

• Expanded character customization. Players get many more options to customize facial features, hair styles, body types, color palette, and clothing options.
• Enriched player-to-player interaction. New lobbies, including the Casino Voloyal which features games like roulette and slots, provide more social experiences for players.
• New weapons, combat abilities, and classes heighten the intensity of real-time battles. With additional weapons types and new special fighting abilities—including new SUV-weapons, photon arts, and all-new classes—players will have more ways to expand or specialize the character's role within the game.

• New levels, enemies and bosses. With new areas to explore, such as the ruins of Old Rozenom City and the Granigs Mine, and new enemy types including new bosses, players face brand new challenges in all-new environments.
• The user's personal avatar is the main character. In Phantasy Star Universe, players experienced the story through the eyes of Ethan Waber. In Ambition of the Illuminus, they will complete missions using their own customized avatar, working to restore peace in the Gurhal System. This content is available offline in the PS2 and PC versions; there is no expansion offline content available on the 360.