Ah!
My mistake, firstly in introducing the Talos Principle where it had no place to be; and then to implicitly agree, without checking, that there was a GoG free distro of it (though by the sound of it, Chrissss's mistake, too, for conflating the two in the first place).
We may need to rewrite teh code to compensate for dwindling intellectual capabilities as we enter our sunset years...
EDITED: 10 Jun 2019 11:00 by MANTHORP