Here are the ones I recommend (and own) for a bowel loosening gaming session.

Outlast
Alien: Isolation
Dead Island
Estranged Act 1 & 2
SOMA
Gone Home
Layers of Fear
Lucius 2
Neverending Nightmares
White Noise 2

https://www.gamingonlinux.com/articles/get-ready-to-become-a-neural-detective-as-observer-is-now-on-linux-amd-not-supported.10604

Highly Recommended

View video on youtube.com

I second Fran Bow for a horror experience.
Also if Dead Island gets a recommendation , I'd recommend Dying Light. Though not sure how well it works - think it was broken for AMD users not long ago.
Running from a horde at night desperately looking for a save point. Man those were the thrills :)

Ooh I forgot about Layers of Fear. Hopefully there are halloween sales coming up but I'll probably grab it anyway. It is a bummer that Ghost Theory never got funded since that is exactly my ideal game type for the season. And the only spoopy part of Gone Home was when

Spoiler, click me

the lightbulb dies behind you.

EDIT: Speak of the devil, [it's on Halloween sale right now!](https://www.gog.com/game/layers_of_fear)