Games like Dorm 17
Games like Dorm 17 include Mouthwashing, Firewatch, MiSide, Summer of '58, and What Remains of Edith Finch. We matched them by the tags players give Dorm 17 on Steam (Psychological Horror, Horror, Adventure, Simulation, and Thriller): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Psychological Horror · Horror · Retro

Firewatch
Shared: Adventure · Walking Simulator · Mystery

MiSide
Shared: Psychological Horror · Horror · Thriller

Summer of '58
Shared: Horror · Psychological Horror · Thriller

What Remains of Edith Finch
Shared: Adventure · Walking Simulator · Mystery

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

Fears to Fathom - Ironbark Lookout
Shared: Psychological Horror · Horror · Thriller

No, I'm not a Human
Shared: Psychological Horror · Horror · Indie

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Adventure

The Park®
Shared: Psychological Horror · Horror · Adventure

Fears to Fathom - Norwood Hitchhike
Shared: Psychological Horror · Horror · Thriller

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

MOLE
Shared: Horror · Psychological Horror · Simulation

Psalm 5:9-13
Shared: Psychological Horror · Horror · Exploration

The Exit 8
Shared: Horror · Psychological Horror · Exploration

SOMA
Shared: Psychological Horror · Horror · Exploration

Outer Wilds
Shared: Adventure · Exploration · Mystery

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Poppy Playtime
Shared: Horror · Psychological Horror · Adventure

Scanner Sombre
Shared: Horror · Adventure · Psychological Horror

DREDGE
Shared: Adventure · Exploration · Psychological Horror

Don't Play This
Shared: Psychological Horror · Horror · Exploration

No one lives under the lighthouse Director's cut
Shared: Horror · Adventure · Psychological Horror

Iron Lung
Shared: Horror · Psychological Horror · Adventure