Hungry for more Aliens: Colonial Marines? Purchase the Aliens: Colonial Marines Season Pass and get access to four downloadable content packages at a 33% discount! All add-on content packs are scheduled to be released from March through to summer 2013. The Aliens: Colonial Marines Season Pass will give you access to campaign content, additional multiplayer content, character customisation and more!
1. Download, install and run installer STEAM.
2. After the game run, create your STEAM account according to instructions on screen, after that go into tab Games, options for product activation on Steam, copy the game bought game key from your KeenShop account
3. After this procedure the game and it's parts is present at Games tab.