Before Amnesia: The Dark Descent, there was Penumbra — developer Frictional Games’ trilogy of survival horror games that includes Overture, Black Plague and Requiem. Online games retailer GOG.com has a very special deal on the entire Penumbra collection, which you can now get for just $4.99. That’s cheap.
If cheap horror games makes you as happy as they do for me, you should definitely take advantage of this deal. Just be quick about it, because the promotion ends on August 1st.