 Although Paladin was the primary source for much of the art, programmer Tom Fulp assisted with the game's art, creating some of the minion creatures for boss characters.Paladin cited "River City Ransom" as his primary inspiration for the game's art style, noting the character's expressions when damaged as a particular point of influence.Fulp added that several beat 'em ups from the 1980s and 90s influenced the game, such as "Guardian Heroes", "Final Fight" and "Double Dragon".