Sex and nudity in video games to the eight-color palette of the NEC PC-8001 computer. It became a hit, helping Koei become a major software company. Also in 1982, the video game company Mystique released three unlicensed games for the Atari 2600; "Beat 'Em & Eat 'Em", "Custer's Revenge", and "Bachelor Party". The games were noted for their negative reception, particularly "Custer's Revenge" for its depiction of (what was perceived as) General Custer raping Native American women. Despite the increased sales (due to one of the first instances of video game controversy), Mystique went out of business after only releasing these three games. A company named
Nolan Bushnell take any body of knowledge from English language arts to foreign language, geography, multiplication table or chemistry tables, to parts of the human body and gamify the experience. BrainRush calls their underlying technology "Adaptive Practice." They have also developed an open-authoring system allowing users to quickly create games in different topic areas. Between 2010 and 2012, BrainRush ran a test in Spanish language vocabulary learning with over 2200 teachers and 80,000 students across the country and got an increase in learning speed of between 8–10 times traditional learning. BrainRush rolled out the full platform in the Fall of 2013. Bushnell