DOOM 1 - THIS.WAD (dmthis.zip)
Channel: DOOM WAD World
Date: 2023-03-20

called "This ______" in the /idgames FTP.
https://www.doomworld.com/idgames/levels/doom/d-f/dmthis
created by Mark Marusak on August 21st, 1994.
from the .txt file included with the WAD:
"So, you feel a little claustrophobic today. Well that's ok. Afraid of the Dark? Oh, and screams rattle your nerves. This is just a little level but has a few surprises. Ok and don't forget to check that map of yours from time to time. I think it will fill in the blacks to the title."

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