The game is an 'indirect sequel' to The Dark Descent set in the same universe, but featuring different characters at a later period in time. It was delayed further due to the increase in game size from 'experimental game' to 'a full-fledged Amnesia game'. Shipping was at first speculated to be early 2013 but was pushed to a later date due to both the 'overwhelming response' and Frictional Games' desire to meet the expectations of the public. It was released on the 10th of September 2013 for Windows, Mac OS X, and Linux. Amnesia: A Machine for Pigs is a survival horror video game, developed by The Chinese Room and published by Frictional Games.