Free Alien:Isolation Dashboard Theme UK

On the dash there is a link to a game, in which you can play and when you escape you receive an Alien: Isolation promo theme.

Guide here.

There are also two gamerpic packs:
http://marketplace.xbox.com//Product/Alien-Isolation-Survival-pack/3ee87bb8-134c-4fec-862e-60136d471d6f
http://marketplace.xbox.com//Product/Alien-Isolation-How-will-you-survive-pack/243067a0-c3c4-46ef-a473-ccc986fd7b0e