The History of Wumpus
It was one of my formative computing experiences on the first "real" computer I owned. No, my Coleco ADAM doesn't count.
The images here refer to the The TI 99/4a cartridge version of Hunt The Wumpus from about 1985.
There's even a multiplayer version online.
A colleague was kind enough to port the original 1975 basic code to C#. You can download the .NET version of Hunt The Wumpus . This version has a few modern amenities, such as representing the cave maps in XML files instead of DATA statements, but it preserves the UI as-is. Here's a screenshot of the magical gameplay experience that awaits you: