The episodic long awaited story-driven Portal mod is finally released. Go on a exciting adventure together with a interactive NPC to explore a different type of testing facility. You partner up with a mysterious test subject who managed to escape a long time ago. Together you try to find a way to escape.

Cheznacho says

10/10 - Agree Disagree

Best mod ever.

Community Rating

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9.1

253 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 by portalnerd

Got it!

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