Now it is time for the final part in these series on puzzles in horror games! This post will be about some puzzles in Penumbra that I personally find especially interesting. Because of this, the post will be filled with puzzle spoilers so if you are planning on playing any Penumbra game and have not yet done so, do so before reading! First I am going to go through some basic guidelines we had when designing the puzzles though. General puzzle design Our main rule when implementing puzzles was something we called the "Island approach". What this means is that all things needed to solve a puzzle are located in the same area, the "island", and connections between islands should be very few and quite obvious. An example of this kind of connection was the hand and head needed to open the door the in residential area in Black Plague. The puzzles to get hold of the head and hand where both confined to their respective islands and where then linked together, hopefully obviou...