Riot Zone, known in Japan as Crest of Wolf (狼的紋章), is a 1992, beat 'em up video game by Hudson Soft for the TurboGrafx-CD console.

In the beginning, the setting takes place in New York City where two men known as Hawk Takezaki and Tony Aldus met up with their chief Jim Hyde, and told him that they finally forced a villain known as Bossman to stay in a place called the DragonZone.

Before he immediately began traveling toward DragonZone and try to demolish it, in order to save a girl named Candy, Tony told Hawk that he will join him.

Players choose between two characters: Hawk, the blond-haired vigilante who has average statistics, and Tony, who is strong, but slow and has a break-dancing move.

When Hudson Soft picked up the rights to the game for a home conversion to the TurboGrafx-16, they changed the title and character designs in a matter similar to what they done with various ports of the Wonder Boy series to non-Sega consoles (such as the original Adventure Island on the NES or Dragon's Curse on the TurboGrafx-16).