Ben Ultimate: Alien War

This game is the evolved forms of some of the aliens found in the Ultimatrixes. Some of them have completely changed their physical appearance, while some simply change their color with some minor extras. However, all Ultimates have enhanced powers and abilities.

The plot follows on from Ben Force set one year after the events of the previous series. The Omnit has been destroyed, and Ben must learn to master the incredible and incomprehensible secrets of the new Ultimatrix, a gauntlet-like version of the old Omnit that not only gives him access to all of his original alien abilities, but also allows him to evolve his alien forms into far much stronger and more powerful versions; called "ultimate forms."

Ben becomes an overnight celebrity, hailed by kids as a hero but distrusted by most adults as a possible threat. With Gwen, Kevin, Julie, and Grandpa Max still at his side, Ben continues to battle alien threats to the galaxy, including finding five aliens that were attacked and kidnapped by an Osmosian villain named Aggregor.

Kevin is forced to absorb energy from the Ultimatrix and goes insane with tremendous energy and power, but is shown that he does still have a good human heart, and still does care, and that he has not gone completely evil. Kevin is eventually returned to normal and Aggregor's actions are reversed.

The second season features more self-contained stories rather than employing an overall storyline, although a real storyline is developing with the appearance of the mysterious, but dangerous Sir George and the extra-dimensional demon called "Diagon".