Should I buy Penumbra.....?

[Lorkas]

You won't be disappointed mate. Though Penumbra Overture is by far the scariest part of all three. The first hour will scare the shit out of you by using both the storyline made by the creepy notes and also by creating the best atmosphere.

Secret bunkers/facilities from WWII with freaky history has always been a phobia of mine, so naturally the game struck me quite easily.