Mega Man X6 is a 2D action-platformer game for the Sony PlayStation 1, released in 2001. It's the sixth installment in the Mega Man X series. Players control Mega Man X as he battles to save a world plagued by the Nightmare phenomenon, fighting against rogue Reploids. Incorporating tight controls, challenging stages, and diverse boss abilities, X6 introduces new features, such as the Nightmare System affecting level conditions and the Reploid Rescue system. Although criticized for its difficulty and level design, it remains a staple for fans of the genre.