Mystic Warriors-based hardware is an arcade system board used by Konami on several of its action games and fighting games in the early 1990s. Since Konami did not use the word system on most of its arcade hardware, its arcade games are usually classified by the type of video and sound chips used. In this case, the hardware is named after Konami's ninja-themed action game, Mystic Warriors, which debuted the system in 1993.