Games like Room 13
Games like Room 13 include The Exit 8, Lethal Company, Layers of Fear (2016), Scanner Sombre, and SOMA. We matched them by the tags players give Room 13 on Steam (Psychological Horror, Walking Simulator, Horror, Exploration, and First-Person): closest matches first, and among equally close ones the better-known games.

The Exit 8
Shared: Walking Simulator · Exploration · Horror

Lethal Company
Shared: Horror · First-Person · Psychological Horror

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

Scanner Sombre
Shared: Walking Simulator · Exploration · Horror

SOMA
Shared: Psychological Horror · Horror · Exploration

Platform 8
Shared: Psychological Horror · Walking Simulator · Exploration

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

Inside the Backrooms
Shared: Horror · Psychological Horror · Puzzle

September 7th
Shared: Horror · Walking Simulator · Psychological Horror

POOLS
Shared: Psychological Horror · Walking Simulator · Exploration

Firewatch
Shared: Walking Simulator · First-Person · Atmospheric

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

DON'T SCREAM
Shared: Psychological Horror · Horror · Walking Simulator

Dreamcore
Shared: Walking Simulator · Psychological Horror · Exploration

The Cabin Factory
Shared: Psychological Horror · Horror · Walking Simulator

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

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

MiSide
Shared: Psychological Horror · Horror · First-Person

Mouthwashing
Shared: Psychological Horror · Horror · Walking Simulator

Backrooms: Escape Together
Shared: Horror · Psychological Horror · First-Person

INFRA
Shared: Exploration · Walking Simulator · First-Person

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

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

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