The story takes place after the end of Megaman X Unleashed, where Sigma is finally defeated, but after an incident in the past involving Dr. Willy and Dr. Eggman, that future has changed and Sigma manages to escape thanks to his help. Now it's up to X, Zero, Axl, Sonic, Megaman and other heroes from other dimensions to stop Sigma from merging the dimensions into his own domain.
Megaman X Unleashed 2: Worlds United is a continuation of the Megaman X Unleashed fangame, where this time it addresses the legendary crossover of the Archie Comics Worlds Unite comics. The game contains 3 different types of fighting style: the Unleashed, The All Star and the Brawler.
