Games like Office After Hours
Games like Office After Hours include The Exit 8, Firewatch, Lethal Company, The Stanley Parable, and Layers of Fear (2016). We matched them by the tags players give Office After Hours on Steam (Psychological Horror, Walking Simulator, Choose Your Own Adventure, First-Person, and Adventure): closest matches first, and among equally close ones the better-known games.

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

Firewatch
Shared: Walking Simulator · Adventure · First-Person

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

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

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

POOLS
Shared: Psychological Horror · Walking Simulator · First-Person

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

Visage
Shared: Psychological Horror · Horror · First-Person

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

Mouthwashing
Shared: Psychological Horror · Horror · Walking Simulator

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

Scanner Sombre
Shared: Walking Simulator · Psychological Horror · Horror

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

Platform 8
Shared: Psychological Horror · Walking Simulator · Adventure

Outlast
Shared: First-Person · Psychological Horror · Horror

SOMA
Shared: Psychological Horror · Horror · First-Person

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

Dreamcore
Shared: Walking Simulator · Psychological Horror · First-Person

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

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

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

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

Fears to Fathom® - Scratch Creek
Shared: Psychological Horror · Horror · Adventure

MiSide
Shared: Psychological Horror · First-Person · Horror