Games like 12 Hours
Games like 12 Hours include Little Nightmares II, Visage, Layers of Fear (2016), Bad Parenting 1: Mr. Red Face, and Platform 8. We matched them by the tags players give 12 Hours on Steam (Psychological Horror, Walking Simulator, Adventure, Horror, and Hidden Object): closest matches first, and among equally close ones the better-known games.

Little Nightmares II
Shared: Adventure · Horror · Psychological Horror

Visage
Shared: Psychological Horror · Horror · Dark

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

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

Platform 8
Shared: Psychological Horror · Walking Simulator · Adventure

Welcome to Kowloon
Shared: Psychological Horror · Horror · Adventure

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

From The Darkness
Shared: Psychological Horror · Horror · Walking Simulator

Garten of Banban
Shared: Psychological Horror · Horror · Singleplayer

Outlast
Shared: Horror · Psychological Horror · Adventure

Still Wakes the Deep
Shared: Psychological Horror · Horror · Walking Simulator

Poppy Playtime
Shared: Horror · Psychological Horror · Singleplayer

Amenti
Shared: Adventure · Horror · Walking Simulator

MiSide
Shared: Psychological Horror · Horror · 3D

Little Nightmares
Shared: Horror · Adventure · Singleplayer

SOMA
Shared: Psychological Horror · Horror · Dark

Blair Witch
Shared: Psychological Horror · Adventure · Horror

Escape the Backrooms
Shared: Psychological Horror · Horror · Adventure

ROUTINE
Shared: Psychological Horror · Adventure · Singleplayer

POOLS
Shared: Psychological Horror · Walking Simulator · Realistic

The Medium
Shared: Adventure · Psychological Horror · Horror

Ten Bells
Shared: Psychological Horror · Walking Simulator · Horror

The Death | Thần Trùng
Shared: Psychological Horror · Horror · Adventure

Garten of Banban 2
Shared: Horror · Psychological Horror · Singleplayer