This trailer is a Halloween teaser for Amnesia: A Machine For Pigs, Frictional Games' upcoming "indirect" horror sequel. Here's what they have to say about this spooky clip:  "As dedicated and enthusiastic followers of both the nature and evolution of the computer game and ALL IT FORBODES for our descendants, we urge you to put the DIRE WARNINGS that may be inferred from the contents of this trailer to the masses using all the WONDER and POWER of the WORLD WIDE WEB at your disposal. For is it not our great responsibility to those LESS ABLE and LESS FORTUNATE than ourselves, the laggardly and lost, those adrift from Mr Darwin’s grand architectures of life, to herd them gently into the corridors of progress, and away from those things which LURK ever about us, just shy of the lights of our GREAT ENGINE, civilisation." Word up.