If a player restarts the game from the beginning after beating it, they'll find a special key in Alyssa's inventory. This can be used to unlock the wardrobe in Alyssa's room to find a variety of bonus costumes.
The first game in the series to give the player complete directional control over the protagonist. The previous games used point-and-click interfaces in which the protagonist was used by selecting a spot to move to and clicking on it.
The game takes place in 2003.
Corroder (real name John Haigh) is based off of the real serial killer John George Haigh, aka The Acid Bath Killer