ECW Hardcore Revolution is a professional wrestling game released by Acclaim Entertainment, based on the wrestling promotion Extreme Championship Wrestling (ECW). The game was released for the Nintendo 64, PlayStation and Sega Dreamcast. It was the first wrestling game to be based on ECW, as well as the first professional wrestling game to receive a Mature rating from the ESRB. The game was criticized for being a near copy of its predecessor, WWF Attitude and not reflecting ECW's unique style, just covering over everything with ECW wrestlers and themes. Acclaim followed this title with the release of a sequel, ECW Anarchy Rulz six months after this game released which was not released on any Nintendo format but on PlayStation and Dreamcast.