If you’ve been itching to play some truly horrible Alien games on Steam then you’re out of luck. Both Aliens: Colonial Marines (2013) and Aliens vs. Predator (2010) have been pulled from Valve’s service.
The news comes via a Reddit thread and a Steam community page discussing both games. If you already own the games you can still play them. Its just that anyone eyeing either game is out of luck, on Steam at least. Both games can still be purchased physically and digitally from Amazon, making their removal from Steam all the more mysterious. On top of that, Alien: Isolation and Aliens vs. Predator Classic 2000 are still available for purchase and download on Steam.
It’s entirely possible that Sega’s license to digitally distribute these games via Steam has ended. This isn’t completely out of the ordinary as Ultimate Marvel vs. Capcom 3, Deadpool, Marvel vs. Capcom 2, and Marvel vs. Capcom Origins were all removed from Steam in 2014. Whether we see the return of these Aliens games is entirely up to Sega, the exclusive games publisher for the Alien IP, and 20th Century Fox, the owner of the Alien IP.