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.
Factum Solus: Episode Two
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Reinitializing......99%
interesting...
what is that?
Is that a sensor, similar to the one in Portal Pro? This one looks much cooler.