Many times, you can hear yourself saying about a game "this is one of the very best games I've ever played". Yet then you remember fifteen or thirty-so other games that you maybe liked a bit more. And so the saying means nothing.
Sanitarium is, if not THE greatest game I've played, on my definite Top10 list - together with Half-Life 2, Grim Fandango, Starcraft, Mafia, Monkey Island, Icewind Dale and other (you get the point of what I like; it's very mixed).
The game has an original concept, one where you play a doctor getting afflicted by amnesia after a car accident. Flashbacks from his past life are an important event in this adventure where the 'point-and-click' feature is extremely very well baked into the story.
The down-tuned (and excellent) actors' voices make the mood very unnerving and bizarre. The graphics might be a bit old on today's screens, but back in the 1998 it was an extremely detailed and beautiful game indeed.
Very, very well worth a few minutes of detective work to find it on the net.