Games like Office Nightmare Chapter 1&2
Games like Office Nightmare Chapter 1&2 include Resident Evil Requiem, Bendy and the Dark Revival, Five Nights at Freddy's: Secret of the Mimic, A Plague Tale: Requiem, and VLADiK BRUTAL. We matched them by the tags players give Office Nightmare Chapter 1&2 on Steam (Action, Adventure, Action-Adventure, Choose Your Own Adventure, and 3D): closest matches first, and among equally close ones the better-known games.

Resident Evil Requiem
Shared: Action · Action-Adventure · Horror

Bendy and the Dark Revival
Shared: Action · Adventure · First-Person

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Action · First-Person

A Plague Tale: Requiem
Shared: Action · Adventure · Action-Adventure

VLADiK BRUTAL
Shared: Action · Adventure · First-Person

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

Poppy Playtime
Shared: First-Person · Horror · Adventure

SILENT HILL: Townfall
Shared: Adventure · Action · Action-Adventure

Five Nights at Freddy's: Security Breach
Shared: First-Person · Horror · Adventure

Bendy and the Ink Machine
Shared: First-Person · Cartoony · Horror

Outlast
Shared: First-Person · Horror · Adventure

Far Cry® 5
Shared: Action-Adventure · Action · First-Person

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

Atomic Heart
Shared: Adventure · Action · Action-Adventure

The Outlast Trials
Shared: Action · Horror · First-Person

Judgment
Shared: Action · Adventure · Action-Adventure

Buckshot Roulette
Shared: Dark · First-Person · Horror

Total Chaos
Shared: Action · Adventure · Action-Adventure

The Other Side
Shared: Action · Action-Adventure · 3D

Saiko no sutoka
Shared: First-Person · 3D · Choose Your Own Adventure

The Forest
Shared: Adventure · Action · Horror

Garten of Banban 8: Anti Devil
Shared: Action · First-Person · Cartoony

Ready or Not
Shared: Realistic · Action · First-Person

Amnesia: Rebirth
Shared: Action-Adventure · Adventure · First-Person