Plot: Avalon: The Legend Lives is a text-based online multi-player role-playing game world that was first released on 28 October 1989 at the gaming convention Adventure 89. Wikipedia
Plot: Drugwars is a turn-based strategy computer game in which the player assumes the role of a drug dealer engaged in arbitrage. The object of the game is to deal the most drugs to pay off the loan shark by the end of the game and make a profit. Wikipedia
Plot: Progress Quest is a video game developed by Eric Fredricksen as a parody of EverQuest and other massively multiplayer online role-playing games. Wikipedia