In some 20 odd years of playing PC games, no game left me more frustrated, confused and ultimately pleased than Sanitarium. Other games were more entertaining, but none more engrossing. Sanitarium is one of a very small handful (less than, actually) of games that left such a lasting impression that I found myself constantly going back, re-installing and re-playing until PC technology left the game behind. So purchasing this on GOG was a no-brainer.