Games like 12 Hours Museum
Games like 12 Hours Museum include Platform 8, The Exit 8, What Remains of Edith Finch, Firewatch, and Outer Wilds. We matched them by the tags players give 12 Hours Museum on Steam (Adventure, Psychological Horror, Simulation, Walking Simulator, and Exploration): closest matches first, and among equally close ones the better-known games.

Platform 8
Shared: Adventure · Psychological Horror · Simulation

The Exit 8
Shared: Exploration · Walking Simulator · Psychological Horror

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

Firewatch
Shared: Adventure · Walking Simulator · Mystery

Outer Wilds
Shared: Adventure · Exploration · Mystery

DREDGE
Shared: Adventure · Exploration · Psychological Horror

Scanner Sombre
Shared: Walking Simulator · Adventure · Exploration

INFRA
Shared: Exploration · Adventure · Walking Simulator

Blue Prince
Shared: Exploration · Mystery · Adventure

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

Quern - Undying Thoughts
Shared: Adventure · Mystery · Exploration

The Room Three
Shared: Adventure · Mystery · Puzzle

Riven
Shared: Adventure · Exploration · Puzzle

Slime Rancher
Shared: Adventure · Exploration · Singleplayer

The Witness
Shared: Exploration · Adventure · Puzzle

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

Sally Face - Episode One
Shared: Psychological Horror · Adventure · Indie

Bad Parenting 1: Mr. Red Face
Shared: Adventure · Psychological Horror · Walking Simulator

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

The Complex: Expedition
Shared: Psychological Horror · Exploration · Adventure

Poppy Playtime
Shared: Psychological Horror · Singleplayer · Adventure

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

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

POOLS
Shared: Psychological Horror · Walking Simulator · Exploration