ECW Hardcore Revolution is a professional wrestling video game released by Acclaim Entertainment, based on the professional wrestling promotion Extreme Championship Wrestling (ECW). 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 but rated Everyone on the Game Boy Color. 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 was released.