Seibu Kaihatsu
One of their earliest arcade hits was the 1989 rail shooter "Dynamite Duke", one of the first to combine close combat with long-range shooting. A year later, Seibu Kaihatsu became best known for their 1990 vertical-scrolling shoot 'em up arcade game "Raiden", which was successful enough to earn several sequels and spin-offs in its series of titles. In 1991, a development department known as was spun off from Seibu Kaihatsu. During the late '80s, Fabtek bought the rights to internationally distribute Seibu Kaihatsu's arcade titles outside Japan. This partnership started with Dead Angle, which  was Fabtek's first game to be released, and ended with Raiden Fighters Jet, which was both Fabtek's and Seibu Kaihatsu's last game to be released. In 1999, its arcade division vanished and its official website shut down. It was also rumored that they filed for bankruptcy; in fact, Seibu Kaihatsu temporarily disbanded itself. Therefore, Fabtek's international distribution rights expired while closing its business. During the same year, they established , right before the dissolution of their relationship with adult video game developers h.m.p. and Mink to develop adult mahjong video arcade games. In 2005, the development staff  left Seibu Kaihatsu to apply at MOSS, then bought the development rights to the "Raiden" franchise from Seibu Kaihatsu to develop "Raiden III" and "Raiden IV" in order to keep the franchise's fanbase hyped with Seibu Kaihatsu assisting them.