"Demon's World" is a 1989 run and gun arcade video game originally developed by Toaplan and published in Japan by Taito and in North America by Catalina Games. In the game, players assume the role of two ghost hunters to fight against several ghosts and monsters that were unleashed upon Earth by the titular demon king. Initially launched for the arcades, the title was then ported to the PC Engine Super CD-ROM² by NEC Avenue and published exclusively in Japan on 26 February 1993, featuring various additions and changes compared with the original release.