While GOG dropped the Great Old Games moniker quite a very long time before, it is still very much at the company of game preservation, and thus why it is possible to locate the likes of Mike Singleton’s 1984 classic, The Lords of Midnight. It is a slice of videogame history that, together with its own sequel, now you can catch at no cost. 

GOG added The Lords of Midnight to its catalog back 2013, so Perhaps You’ve chosen it up, however if not you can grab them up right now without spending a penny.