Drop a LIKE for an alternative zombies mode in Ghosts! What do YOU think of an aliendinosaur survival mode in COD Ghosts?br • Click here to subscribe: br Call of Duty: Ghosts may have a new alien survival mode called "EXTINCTION", similar to zombies but with potential alien hordes! This could be an incredibly epic mode! Imagine a world where you and 3 others escape from hordes of aliens! Infinity Ward HAD to make a co-op mode which would rival Treyarch's Zombies and this could be it.