mharris: I just checked on GOG's listing for adventure games, then chose "multiplayer" from the dropdown. Nothing. :)
Sorapak: I think long time ago (somewhat after during the golden age of adventure games) there was a thought about online game,I think it was supposed to be based on Myst. Never happened I guess or canceled..
You just reminded me... I own all of the Myst games now I think, between DVDs and GOG. I've only actually played and solved the original and Riven though, both fantastic games and total classics at that. I started Myth 3: Exile at one point but only got an hour or so into it and the computer went sour before I could get playing it again. I should totally fire the remaining Myst series up one of these days and finish them. I also discovered a new game series today which is claimed to be in the style of Myst called "RHEM" on Greenmangaming/Steam. Contemplating getting them too as they're on sale and dealzon.com has a coupon for additional discount. :)