Game Ben 10 Ultimate Alien: ULTIMATE DEFENSE - It's hero time! In this new Ben 10 Ultimate Alien game you must defend the trailer of grandpa Max from attack of the alien enemies: Vulkanus's minions, Aggregor's soldiers, Red Havok Beast, Blue Havok Beast, R.E.D.S. Grunt, R.E.D.S. Melee, R.E.D.S. Elite, Ssserpent and SevenSeven. Be a truly hero using the Ultimatrix to transform Benjamin Tennyson in the alien forms: Ultimate Big Chill, Ultimate Echo Echo, Ultimate Humungousaur, Ultimate Cannonbolt, Ultimate Swampfire and Ultimate Spidermonkey. Have fun now with Ben 10 games free online!