Demons Ring is an "Occult Fantasy Adventure" game released in March 12, 1984 for the NEC PC-88 and was an early title developed by Nihon Falcom. The game involves the player solving puzzles by interacting with the environment through the use of a text parser and was an example of Falcom's technical know-how at the time. Every contemporary Japanese adventure game released for computers during this period would draw its graphics line-by-line and slowly fill in the colors, a long process that would need to be done anytime the scene changed to a new image. Demons Ring, on the other hand, could transition to different images in under half a second, a feature that was heavily advertised by Falcom and something that would eventually become a standard for the genre moving forward.