Frictional Games' HPL1 engine used to create the Penumbra series.
9/10 - Mar 17th, 2011 Agree Disagree
A bit weird engine, the Penumbra series is using it as well as Amnesia. They are all awesome first-person horror/puzzle games that I love, I guess the engine is good, not perfect. But it's Indie so... Oh and it's apparently open-source, cool!
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