I remember Lighthouse from back in the day. That game terrified me. Considering that most of Sierra's adventure games have been released on GOG and/or Steam, what makes you think this won't be the same way?
Lighthouse was a 90s game, and Sierra has not released it yet, and it is hard to run on modern OS. It quit working from Windows XP and on... but Squirt the cat, made a patch that allows two of the point and click games I mentioned (Lighthouse, and Amber) work on XP, Vista, and 7) don't know about 8 or 10.
I own both physical games, and run them on Windows 7 64 bit fine, and it brings back memories. Amber won't be released probably, because Hue Forest made 1 game, Amber, and it went out of business in the 90s, so I doubt that ever will come here, haven't heard anything from the developers (the Wimmers) and Sierra's game, MIGHT come out maybe one day, but... its 2015, still hasn't... and its another game that doesn't work on XP+ without Squirt the cat's patch made for it.... both games do run on 7 64 bit with the patch installed.... its not perfect though, there are issues with the patches, but you can complete both games .
May be ubisoft release it later.
As we got 3 classic games from them this week.
Hopefully they will, I had to break down and purchase the physical DVDs for them... because I couldn't wait anymore, never played Exile or Revelations, until now.... and I can say I would buy digital in a heart beat, if they can get the games to run as smooth on 7 64 bit as Riven does digitally.
Exile has an issue with even with a full install still lags a bit, even on fast PCs , mine suffers from a slight slowdown lag, every time you click, audio than gets stuck on a broken record type deal for 1 second, so not ground breaking.
I would really like to see Myst III and IV on GOG at some point, I would buy them in a heart beat despite having physical copies around here. I remember being a fan of Myst right from the first time my father brought home a copy of the first game. I really enjoyed the feel of getting lost in the Ages.
I would also like to see Starship Titanic (a fantastic work by Douglas Adams), The Time Machine, Victor Vector and Yondo in The Cyberplasm Formula, and Radio Active (done up like a 90s game show about music trivia) make it to GOG. That being said the latter two are QT games so who knows if that could ever happen.
Another game, would be Sierra's 3D-Ultra Minigolf Deluxe game, I LOVED that's 90s game on my Windows 98 machine, it was FUN, would love to see it released.