ATROPHY: XCIX is a first person action horror adventure that takes place in an abandoned hospital in the north of England. You will play as a high ranking officer supervising a patrol on the outskirts of a small town. Several years have passed since the fall of the Combine and in its wake normality is slowly returning to the world. Towns have reformed, people have come back together and are beginning to thrive ... but danger still lurks. Disconnected bands of Combine soldiers still cause terror wherever they are found and the nightmare creatures they brought with them still hide in the shadows. Reports are coming in that people have been going missing in the smaller camps and rumour has it that the Combine may be be involved. Your task will be to patrol this area and make sure nothing untoward is occuring. But be careful, there are worse things creeping around in the darkness than the Combine ... and what does any of this have to do with the events that occurred aboard TITAN: XCIX?