Dead Cyborg is a first person, sci-fi adventure game with mind-blowing graphics and a very challenging story. The game takes place in a post-apocalyptic world, a long time after a nuclear war. You have to find your way out of a military experimental shelter full of robots, empty cans of nuclear waste, and dead bodies…
It’s a first-person, 3D adventure. Think Penumbra when it didn’t try to be about combat. You awake in a cryogenic tube, apparently with no memory, and it seems something has gone very wrong wherever you are. Everything’s broken and delapidated. Radiation spills everywhere. Robots wander around, guarding corridors. The old amnesia trick might be overdone, but the sense of exploring a scary new world is phenomenal. – PC Gamer
Author:
Endi
Game Engine:
Blender
Released:
2010
Links:
Official Website
PC Gamer Article

No Mac or Linux version.
there is a linux version. I have it.
While this game does play in multi-texture mode (if your computer doesn’t support GLSL) it is impossible to complete the first level, as one of the key cards is hidden behind one of the spiderwebs, which in GLSL is transparent, but in multi-texture is not.
Only get it if you have GLSL, or it is a waste of your time (or is it anyway?)