What’s your favorite tight OSR all-in-one setting/adventure/module?? Looking to get into something new!

Hey all, I watch Questing Beast a fair bit and he recently reviewed something called Yoon-Suin and it made me fall in love with that kind of all-in-one game with a tight and specific concept and story. The art is incredible too.

I’ve been absolutely loving Shadowdark and have wanted to get into OSE, but are there these smaller all-in-one games that people especially love?

Thanks in advance!