Seems to be a lightweight horror game based on Cairn, in the vein of
things like The Thing, SCP, or Call of Cthulhu.

https://goblinarchives.itch.io/liminal-horror

"Liminal Horror is a rules-lite, adaptable modern horror roleplaying
game about normal characters and their struggles against the things that
go bump in the night.

The game focuses on investigation, blending simple, old-school inspired
rules with modern, narrative first principles, where survival is not
guaranteed and those that do survive are often forever changed. It is a
rules-lite, fail forward system that leverages creative problem solving
in order to create memorable experiences at the table. Players act as
'investigators' navigating a modern world full of terrible and
unknowable horrors.

For fans of Junji Ito, John Carpenter, Silent Hill, Resident Evil, Call
of Cthulhu, Monster of the Week, or Silent Legions but wanting
rules-lite adaptable system. It is a modern horror hack of Yochai Gal's
Cairn (Into the Odd + Knave)."

There are four scenarios linked from the page which are not free. There
was a game jam to create scenarios on itch though, and some of the
entries of that are free.
https://itch.io/jam/tales-from-the-void/entries