Games like Zone 13
Games like Zone 13 include Mouthwashing, Firewatch, Layers of Fear (2016), Outlast, and No, I'm not a Human. We matched them by the tags players give Zone 13 on Steam (Horror, Walking Simulator, Atmospheric, Psychological, and First-Person): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Atmospheric · Psychological

Firewatch
Shared: Atmospheric · Walking Simulator · First-Person

Layers of Fear (2016)
Shared: Horror · Atmospheric · Walking Simulator

Outlast
Shared: Horror · Atmospheric · First-Person

No, I'm not a Human
Shared: Horror · Atmospheric · Singleplayer

The Beginner's Guide
Shared: Walking Simulator · Atmospheric · First-Person

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Psychological · Horror

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · First-Person

Five Nights at Freddy's
Shared: Horror · Singleplayer · Indie

Buckshot Roulette
Shared: Horror · First-Person · Singleplayer

The Stanley Parable
Shared: Walking Simulator · Psychological · First-Person

KARMA: The Dark World
Shared: Walking Simulator · Horror · Atmospheric

Amnesia: A Machine For Pigs
Shared: Horror · Walking Simulator · Atmospheric

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

[Chillas Art] The Convenience Store
Shared: Horror · Indie · Atmospheric

Among the Sleep - Enhanced Edition
Shared: Horror · Atmospheric · Walking Simulator

The Park®
Shared: Horror · Walking Simulator · First-Person

Summer of '58
Shared: Horror · Atmospheric · Walking Simulator

Slender: The Arrival
Shared: Horror · First-Person · Indie

Kholat
Shared: Horror · Walking Simulator · Atmospheric

The Hat Man: Shadow Ward
Shared: Horror · Atmospheric · First-Person

MiSide
Shared: Horror · First-Person · Atmospheric

Scanner Sombre
Shared: Walking Simulator · Horror · Atmospheric

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Singleplayer

