In Development is a mod in which you travel through a game developer's mind. You will see his game concepts, his dreams, and his hallucinations while using Debug weapons to fight off anything that tries to kill you. Code. Design. Explore. Escape.
Is this game developer going to go crazy? You'll have to keep watching to find out.
Is that a mounted AR2 I see there? Anyways, I can't really tell much about the tunnel, other than that it is very rectangular(walls, ceiling, and floor look completely flat), and that the ground and ceiling textures look pretty similar. It's really dark; you could still have lights lining the walls and make it dim and maintain that eeriness. IDK I'm not a mapper.
oh but you sound like one. ar2 gun is gonna be replaced by the MG42 I think...and i agree with the poor texture choices. As far as lighting, I am hoping to get some lantern models and stuff, but there is gonna be very little electrical lighting going on in these levels. WW2 bunkers, so yea...not era-specific.