Sega has revealed that those who pre-order Alien: Isolation will get two bonus mission packs that contain the cast of the 1979 movie, Alien. The characters will contain the likeness and voices of the movie’s actors, which includes Sigourney Weaver (Ellen Ripley), Tom Skerritt (Dallas), Veronica Cartwright (Lambert), Harry Dean Stanton (Brett), Yaphet Kotto (Parker) and Ian Holm (Ash).

Pre-ordering the game upgrades it to the Nostromo Edition, which includes these mission packs called Crew Expendable. The missions allow you to take control of Ellen, Dallas or Parker as you explore the sinister Nostromo ship. For the time being, Sega confirms that this content will only be available to those who pre-order the game.

Alien: Isolation creative director Alistair Hope said the following:

“Working with the original cast has been an incredible experience. It was important to us to have the key original cast members reprise their roles in order to perfectly capture the atmosphere of the movie. For some of the original cast, this is their first appearance in an Alien video game. Seeing them reprise those roles after 35 years was an unforgettable experience.”

If you’re in North America and you pre-order the game from GameStop you’ll receive an expansion called “Last Survivor”. Sega says the following on this content:

“On hearing the screams of Lambert and Parker, players must navigate their way back down through the Nostromo in order to activate the self-destruct sequence, before retracing their steps back to the Narcissus shuttle and their escape.”

Alien: Isolation is being developed by The Creative Assembly for the PlayStation 3, PlayStation 4, Xbox 360, Xbox One and PC. The game launches on October 7th, 2014.