Gun Fight - Arcade

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Gun Fight, known as Western Gun in Japan and Europe, is a 1975 multidirectional shooter arcade game designed by Tomohiro Nishikado, and released by Taito in Japan and Europe and by Midway in North America. Based around two Old West cowboys armed with revolvers and squaring off in a duel, it was the first video game to depict human-to-human combat. Wikipedia.