I was inspired by the cover of Sonic 1, commemorating the 20th anniversary of Half Life 2. And now we have 3 projects that will bring Episode 3 to life.
There might not be modern cliff-dwelling societies, but there is a mesa-dwelling research facility.
I've begun work on a HL1 cliffside map. I've always loved cliffside areas in HL1 mods, so I'm doing it here.