You’ll need a base game of Nemesis or Lockdown Edition to play it. Carnomorph adds a new mechanic with an intruder race. Character mutations also allow players to get infected and turn into aliens.

Nemesis: Lockdown takes place after the original and sees the crew land on a colony which has been overrun with aliens. Yes, they really are having the worst day.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Ian Stokes Can we get Alien? No, we've got Alien at home. Fortunately, the Alien we ...