Streets of Rage

The once peaceful city has been taken over by a criminal syndicate, including factions of the police. Mass violence is now common and no one is safe. Adam Hunter (an accomplished boxer), Axel Stone (skilled martial artist) and Blaze Fielding (judo expert) are young ex-police officers who have quit the force to fight back against the syndicate.
Depending on whether the game is played as one-player or a two-player co-op, and whether the player accepts or rejects Mr. X's offer to join his henchmen, there is a possibility for an alternate ending where the player becomes the new head of the crime syndicate.

Streets of Rage is a side-scrolling beat 'em up video game developed and published by Sega in 1991 for Mega Drive/Genesis. It is the first installment of the Bare Knuckle/Streets of Rage series which was followed by Streets of Rage 2 and Streets of Rage 3.