It's been three weeks since Earth's near collision with the space colony Eurasia. The disaster was averted by Zero's heroics. Now, on a bruised and battered planet, tales of rampagning reploids are surfacing. It's up to Mega Man X to investigate these mysteries but it's not going to be easy. Mega Man X must battle through a maze of levels and rescure reploids along the way. Return to battle agagin and again with the new Nightmare System, which randomizes level maps, enemies and endings based on how you play the game. Mega man X is back and now it's personal!