The year is 1968, 7 years before the original Hunting ground takes place and you are Ron Lecter. By that time he was an ordinary man in central of London. Join Ron and discover his origin in this nightmare-ish chapter of the hunting ground trilogy, where fear and torment are inescapable.
Here is a video for you to watch on how to correctly install HGO so it will run properly without any problems :P This might be easier to follow instead of reading the "READ ME BEFORE PLAYING" text file :)
Fun fact: you don't have to copy anything in order to play the custom story. You only have to copy the Custom Story folder to Amnesia/custom_stories and the game will automatically find all the files. (Amnesia searches in all folders in the root map)
You'll only need to copy the entities to the Amnesia/entities folder when you're planning on editing maps with those entities.
Wow so this video is basically useless then XP