The listing, Guns of Icarus Online [Steam Key] has ended.
GUNS OF ICARUS ALLIANCE PRE-ORDER
Get early access to Guns of Icarus Alliance DLC before official release! To help us test and follow the development, please email us at feedback@musegames.com with your steam receipt. Help us make Alliance the best it can be!
Guns of Icarus Alliance is the PvE Expansion DLC and is now available for Pre-order. From a single pilot to as many as 16 players can unite in their battle for the wasteland, completing objectives in all new PvE/Co-op game modes like capturing cargo or destroying drilling platforms. You just need to grab your friends and go. Choose a faction and unlock their special costumes, weapons, and airships as each victory brings your faction one step closer to their ultimate goal of reshaping the world.
More info: http://store.steampowered.com/app/209080/
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This game works on mac and linux too! Also includes steam trading cards
Good Luck!