But normally, save for the odd urban explorer or raver illegally slipping onto the tracks for a nose around or a dance, this eerie world of shadows and ghosts has been all but forgotten.
However, its problems began when sharp-eyed players noticed that the fifteen years it had taken to develop had apparently not left enough time to create backgrounds, which had been lifted from The Elder Scrolls: Oblivion, World of Warcraft, Thief: Deadly Shadows and elsewhere.