Super-retro looking horror title The Glass Staircase added official Linux support earlier this month and it looks pretty freaky.
Developed by Puppet Combo, they said they were inspired by older survival horror games like Silent Hill, Rule of Rose and the Clock Tower series. They also sprinkled in some inspiration from Italian zombie movies like Burial Grounds: Nights of Terror, House by the Cemetery and The Beyond (the 1981 film, not the newer sci-fi one of the same name).
What else the developer said about it:
Explore the rotting mansion on the English countryside as a number of young servants expansively! Who could guess what you might find in each decrepit room... Be very careful; you never know what might be lurking around every corner, just out of sight, quietly watching from the darkness. Use your eyes and ears as you explore, some notes or items may be hidden. Prepare a dark room for your time with The Glass Staircase. Don't rush yourself. Put yourself in the shoes of the girls you play as. None of them want to die.
I remember trying to play games like this many years ago, the style and atmosphere of them always freaked me out way too much and the visuals here really do remind me of them. Not something I'm really a fan of myself so I won't be playing it through but I'm sure some of our readers will enjoy know about this one.
If you're interested, it's available only on itch.io.
Hat tip to riusma.