Monster (manga)
Written and illustrated by Naoki Urasawa, "Monster" was published in "Big Comic Original" from December 1994 to December 2001. The 162 chapters were periodically collected into 18 "tankōbon" volumes published by Shogakukan, the first on 30 June 1995 and the last on 28 February 2002. While writing "Monster", Urasawa began the series "20th Century Boys" in 1999, which would continue after "Monster" had finished. "Monster" received a nine-volume "kanzenban" re-release between 30 January and 29 August 2008.
MUD
"Monster" was a multi-user adventure game created by Richard Skrenta for the VAX and written in VMS Pascal. It was publicly released in November 1988. "Monster" was disk-based and modifications to the game were immediate. "Monster" pioneered the approach of allowing players to build the game world, setting new puzzles or creating dungeons for other players to explore. Monster, which comprised about 60,000 lines of code, had a lot of features which appeared to be designed to allow "Colossal Cave Adventure" to work in it. Though there never were many network-accessible Monster servers, it inspired James Aspnes to create a stripped down version of "Monster" which he called TinyMUD.