Frictional Games' own game engine goes under the name HPL and uses industry standard technologies such as OpenGL, OpenAL and Newton Game Dynamics. The engine was released to the public as open-source in 2010 after the Humble Indie Bundle promotion finished.

Authors about the engine:
"The engine is built from an engine created when making a thesis job which resulted in the platform game Energetic. Before moving into the 3rd dimension I made some cleanup of the engine (which was quite rushed in some places) and started to add a base for 3D rendering. I would not say that the original 2D engine was modified to add 3D, but rather a 3D layer was added so all of the 2D stuff is still there. It is still possible to make a 2D tile game using our engine."

Latest Media

No images, videos or audio files have been added to this gallery. Join now to share media with the community.

Blog RSS Feed Report abuse Latest News: Desura's 7 Days of Horror Sale - Day Five

About Desura with 6 comments by Henley on Nov 2nd, 2013

Day 5 - Frictional Games Collection

Frictional Games and Desura have combined forces to scare the pants off you! Amnesia: The Dark Descent, Amnesia: A Machine for Pigs and the Penumbra Collection (all three Penumbra games) have had their prices SLASHED!

Each game featured here is a first person survival horror all about about immersion, discovery and living through a nightmare. These experiences will chill you to the core. Perfect for scaring yourself senseless!

Prepare to be terrified by these amazing game deals for the next 3 days!

Check out the Halloween Jump Scare Video Contest for a chance to win an uberpack of horror games that will give you the chills!

Penumbra: Requiem

Penumbra: Requiem Penumbra: Requiem

Updated 1 month ago Released Aug 23, 2008 Single Player Adventure

In the puzzle oriented expansion Penumbra: Requiem long lost friends will return and aid Philip on his quest, but can they really be trusted? In the bizarre...

Penumbra: Overture

Penumbra: Overture Penumbra: Overture

Updated 1 month ago Released Feb 25, 2007 Single Player First Person Shooter

Penumbra is a first person horror adventure focusing on story, immersion and puzzle solving. Violence and combat is hardly an option - the player has...

Penumbra Collection

Penumbra Collection Penumbra Collection

Updated 1 month ago Released Feb 24, 2006 Single Player First Person Shooter

Penumbra is a first person horror adventure focusing on story, immersion and puzzle solving. Violence and combat is hardly an option - the player has...

Penumbra: Black Plague

Penumbra: Black Plague Penumbra: Black Plague

Updated 1 year ago Released Feb 8, 2008 Single Player Adventure

Trapped in a shadowy, underground complex, intrepid explorer Philip continues the search he began in Penumbra: Overture, to discover the truth behind...

Post comment Comments
SlenderMin Nov 23 2012, 5:29pm says:!

+1 vote     reply to comment
pewdiepiefan1 Jun 25 2012, 11:40pm says:

this engine is Better then amnesia's engine

+1 vote     reply to comment
scott_aw Feb 12 2011, 8:39pm says:

It's a very nice engine, performed better with interaction than Oblivion does. Also I loved the Penumbra games, can't wait to see what their newest engine can do.

+3 votes     reply to comment
Mkilbride Oct 29 2010, 5:08pm says:

And yet I doubt anyone will use such a fantastic Engine that has a eerie sense of reality.

+2 votes     reply to comment
hogsy Sep 10 2010, 3:25pm says:

HPL1 is now open-source.

+5 votes     reply to comment
MrCal3x Mar 9 2011, 7:24am replied:

Very good! :)

+2 votes     reply to comment
Zlandael Sep 26 2010, 6:49pm replied:


+3 votes     reply to comment
Post a Comment
click to sign in

You are not logged in, your comment will be anonymous unless you join the community today (totally free - or sign in with your social account on the right) which we encourage all contributors to do.

2000 characters limit; HTML formatting and smileys are not supported - text only

Windows, Mac, Linux
Send Message
Official Page
Release Date
Released May 11, 2010
Engine Watch
Track this engine
Community Rating



11 votes submitted.

You Say


Ratings closed.

Embed Buttons

Promote HPL1 on your homepage or blog by selecting a button and using the embed code provided (more).

180 of 696
Last Update
1 month ago
36 members