Last month, all three games were pulled from Valve's store due to licensing agreements. Of course, those who have already purchased the games can still play them without a problem, but those looking to buy the trio now are currently out of luck.
Over on Twitter, Bethesda has made it clear it's working to get all three games back on Steam.
The titles have also been pulled from GOG.com. There's no word yet if they will return to that storefront as well. Be sure to keep it tuned to GameRevolution to stay updated on the status of these three classic PC games.