The Humble Spooky Horror Bundle 2018 just launched and while it doesn't have all titles on Linux, what it does have for us is good.
If you go for the minimum of $1 (around £0.78) you will grab these Linux games:
- White Noise 2
- Layers of Fear
And also, if you pay more than the current average you will also get Detention.
I've played both White Noise 2 and Layers of Fear and I consider both to be pretty decent games. Layers of Fear is especially good, one that really did make me feel uneasy the whole way through it's probably one of my favourite horror games from the last few years.
I haven't personally played Detention, but I've heard a lot of good things about it.
Grab a copy here. Buying using our link supports us and the Free Software Foundation (our chosen charity).