Moonmist, Infocom

This Infocom adventure is notable for several reasons. Cowritten by Jim Lawrence, a writer of some pedigree with the Nancy Drew and Hardy Boys books, the game is set in the unusual location of Cornwall and also features one of the earliest examples of an openly gay character in a videogame. The cover is also wonderfully evocative. Up on the hill stands the main location of the game, Tresyllian Castle, and it’s an intriguing mix of conventional home and castle keep. A partially-destroyed craggy wall to the right betrays an eventful past for this spooky building while above it floats a superbly-realised moon, spotted with plentiful craters and embraced by layers of wavy clouds. In the foreground, the titular fog gathers forebodingly, while three lights shine brightly from the castle. One thing is for sure: someone is in, and waiting, no doubt, for you!