Need help finding an old concept map...

[Fort of Hard Knox]

This is a needle-in-a-haystack request, but many many years ago I found and started playing a wad that thoroughly unnerved me. I cannot remember the name.

It took place almost entirely inside of a large blood, bone, and metal machine. It put many earlier ZDoom features on display with instant kill sectors, move sectors, and a whole lot more. The main gameplay focus wasn't on combat so much as exploration and trial-and-error testing of the levels. It was so oppressive and unnerving when I played it that I simply put it down and never touched it again. It was machine-cosmic-horror and more than half a decade later I still think about it.

I know this is a shot in the dark but I figured I'd ask. Hopefully, it'll get moved to wherever it belongs or I'll get pointed to the right place to ask.

[KeksDose]

Maybe you're thinking of Adessa by LWM. https://www.doomworld.com/idgames/level ... a-c/adessa

[Fort of Hard Knox]

Not quite, but this is still an interesting demo.