"Western Gun" was his second game licensed to Midway for release in the United States. However, the title was changed to "Gun Fight" for its American release. Midway's "Gun Fight" adaptation was itself notable for being the first video game to use a microprocessor. Nishikado believed that his original version was more fun, but was impressed with the improved graphics and smoother animation of Midway's version. This led him to design microprocessors into his subsequent games. "Gun Fight" was a success in the arcades, was later ported to the Bally Astrocade console and several computer platforms. "Gun Fight's" success opened the way for Japanese video games in the American market.