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There's also a doom map.

https://www.doomworld.com/forum/topic/134292-myhousewad/

This is fantastic, love OP's misdirection.

Duke Nukem 3D had a stock level (E2L11, "Lunatic Fringe") that did something similar. The main structure of the map was a 720-degree loop. I remember it took me a good long while to figure out what was going on the first time I played it.

Amazing game.

That rocket launcher, that grenade launcher. The suicide Bobs.