Sometime before Johnny Cage knuckle-dusted his first ball sack, or Scorpion immolated his first foe into a pile of bony twigs, there was another brawler for Amiga and PC systems that was riding the ultraviolence train prior to the debut of Mortal Kombat in 1992. Its name was Moonstone: A Hard Days Knight.
Source: N4G PC Have You Heard of the Gory and Savage Beat Em Up Moonstone: A Hard Days Knight?