Dungeon (1987)

Dungeon won't win any awards for the most original name, in fact it may be confused with several other games. (See below for Dungeon Crawl, a much more sophisticated Roguelike game.) But despite that, it does offer simplified Roguelike gameplay. Each level is randomly generated and includes treasure to collect and monsters to fight, along with the ASCII text-mode "graphics" popular in the Roguelike genre. One potential problem is that use of the numeric keypad is required, so it won't be easy to play this game on most laptops or other keyboards which lack a keypad