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PCPC · 2007 · Survival horror with FPS aspects

Penumbra: Overture

Penumbra: Overture (PC, 2007) has an official source code release, FrictionalGames/HPL1Engine, and 2 other public projects, including an open-source reimplementation.

Data checked 2026-10-13 · unbaked registry

Projects

HPL1Engine
Source release779 starspushed 2023-03-22GPL-3.0 license

A real time 3D engine.

Official source release (companion to main entry).

PenumbraOverture
Source releaseC++ (HPL1 engine)565 starspushed 2017-12-25GPL-3.0 license

Penumbra: Overture is a first person horror game, using the HPL1 Engine.

Wikipedia: open-source code, proprietary assets; source released 2009 by/for Frictional Games. Developed by Swedish developer Frictional Games, the game blends the genres of survival horror, first-person shooter, and adventure. Open source…

ScummVM - Hpl1 enginecovers 62 games
ReimplementationC++ (ScummVM framework); engines/hpl12,842 starspushed 2026-10-12GPL-3.0 licenserelease v2026.4.0

ScummVM main repository

Supported in ScummVM (see compatibility list). Titles: Penumbra: Overture ()

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What you need

You need your own copy of the game: these projects ship code only.

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Found via en.wikipedia.org/wiki/List_of_commercial_video_g, paradoxplaza.com/index.php?option=com_content&ta, megagames.com/news/penumbra-overture-game-and-en, scummvm.org/compatibility/, wiki.scummvm.org/index.php/Engines

GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.