Factum Solus is a story driven episodic Portal mod. Player plays as Chell from the original Portal, but in a totally new exciting universe where the Aperture center is not controlled by GLaDOS but a AI called Ben.
As the player goes through new, creative and well thought out puzzles, she discovers that there is someone watching her. Someone not from the staff of the Enrichment center. Who could it be? This person becomes a big role in the story of Factum Solus and they work together to beat the chambers in Factum Solus: Episode Two.
Check out the official website

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Factum Solus: Episode Two Factum Solus: Episode Two Factum Solus: Episode Two
Blog RSS Feed Report abuse Latest News: EPISODE 2 RELEASED - Reinitializing...100%

20 comments by Fearlezz on Apr 18th, 2013

2 years, 8 months and 8 days ago
the first episode of Factum Solus was released. Today Episode 2 is finally released for you to enjoy!

Get going! You can download it from here on ModDB!

Factum SolusFactum Solus: Episode Two

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Factum Solus: Episode 2 HOTFIX (1.1)

Factum Solus: Episode 2 HOTFIX (1.1)

Apr 21, 2013 Patch 7 comments

This is a small patch that solves the issues with missing token entries at the menu and in the in-game hud.

Factum Solus: Episode 2

Factum Solus: Episode 2

Apr 18, 2013 Full Version 25 comments

Episode 2 of the long awaited story-driven Portal mod is finally released. Factum Solus takes you on a exciting adventure to explore a different type...

Factum Solus: Episode 1

Factum Solus: Episode 1

Aug 10, 2010 Full Version 33 comments

Episode One of Factum Solus. Please send osme feedback to my email. Second episode will be released later.

Post comment Comments  (0 - 10 of 325)
EddAdrian Feb 22 2015, 3:49pm says:

loved episode 2! i really enjoy story driven mods

+1 vote     reply to comment
Dune_Jumper Feb 14 2015, 1:38am says:

That was a lovely mod!
Question; is an Episode 3 planned? That didn't seem like a proper ending, but I don't see any official info on a 3rd episode.

+2 votes     reply to comment
Mr.Breezer Jan 4 2015, 6:16am says:

How is that song named in video of Episode 1?

+1 vote     reply to comment
mikaelbadillo Dec 13 2014, 9:27pm says:

When I try episode 2, when it loads it crashes and says: GetSwizzleComponentVectorIndex- invalid parameter. HOW DO I FIX THIS! IT USED TO WORK FOR ME! PLEASE HELP ME

+1 vote     reply to comment
polardozer Dec 10 2014, 3:31pm says:

Dang Bro! Awesome map, I just played EPisode one, but, just a tip, you have to change the GameInfo and stuff to get it to work, JSYK, If you want to release a hotfix=D

+1 vote     reply to comment
mikaelbadillo Dec 9 2014, 6:48pm says:


+1 vote     reply to comment
thewildwindsofwinter Dec 6 2014, 2:28pm says:

I can't open the first episode, I get an error message that says it's missing matierials/console/startup.vtf or something.

+1 vote     reply to comment
Guest Sep 24 2014, 7:09pm says:

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RYANSUPERGENIUS1123 Aug 11 2014, 3:46pm says:

Ready to make Episode 3 yet?

+3 votes     reply to comment
Paynamia May 12 2014, 7:59pm says:

Here's my gameinfo.txt for Episode One:
And Episode Two:
They add support for a custom folder, and if you have EP1 and EP2 installed together, the custom folder for EP1 will also apply to EP2.

+2 votes     reply to comment
Dune_Jumper Feb 13 2015, 11:38pm replied:

Thanks for this!

+1 vote     reply to comment
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Release Date
Released Jan 12, 2011
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251 votes submitted.

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Highest Rated (2 agree) 9/10

Factum Solus is a good mod. Although I could not count the number of texture and graphics errors it was well done. I really liked the custom particle systems used and another human in the game. The tests were not bad, however fairly easy. I really liked the custom AI voice and all the particle systems.

Apr 26 2013, 6:28pm by portalnerd

Lowest Rated (2 agree) 2/10

Technically impressive, UTTER CRAP to play.
Cheap timed levels all around.

Sep 20 2012, 7:16pm by guru.arnananda

First Person Shooter
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1 year ago
690 members