REQUIRES ALIEN: ISOLATION FOR XBOX ONE, SOLD SEPARATELY. Purchase the Alien: Isolation Season Pass to get access to five add on packs at up to 25% discount! All Season Pass add on content packs are scheduled to be released by March 2015, and will give you access to new maps and characters to take on the Survivor Mode challenge. Save money on Survivor Mode add on content for this game by purchasing the Season Pass. Content can be downloaded from the Xbox Store as and when available.