This is a Gun Game level I am currently working on. It has about 3 or 4 days of work into it, and it's a very small power plant. The reference is from a Powerplant in Philly, and has no custom content. It's sitting at 90% complete or so, with only some texturing. lighting, and play testing left to go.
Edit: The level is released, before I realized it I found out my HDR cubemaps got broke

But if you like gungame give it a go.