Ghost Factory was a playable map in the first version of Metal Gear Online included on Metal Gear Solid 3: Subsistence. It was the ruins of an abandoned factory, being over two stories tall with a penthouse at the top. The first floor was a machine shop, while the second floor had fallen debris. The roof acted as the third floor. To the east was a crevice with a bridge going across it and the main building. There were also various shipment containers and trucks nearby, as well as a small building that was presumably some sort of storage building. There was also an underground duct system connecting these areas. A cement building was also nearby just near the grassy field and long ditch.