Source: GameZone
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Penumbra is an adventure game on the lines of the old Shivers, which was a creepy adventure game from about 10-15 years ago. In Shivers, players were constantly on the seat of their pants, waiting for the next startling moment. Another similar game in terms of edgy atmosphere was a Tex Murphy game, from about the same time frame. 7th Guest and others also come to mind. Penumbra compares well to these types of games in the “scare” department, but the weak and largely unexplained back story takes away from some of the effect.