B3313 comes to mind when you want liminal space vibes. It literally feels like dreams a ROM-hacker would have. I’ve had similar dreams when I was ROM-Hacking Luigi’s Mansion.

Anyway, I am as old as Mario 64 and I do agree on the spook vibes. Mainly the graphics at that era have this horrifying vibe to them. Mainly Super Mario RPG comes to mind for horrifying graphics.