Games like Back rooms: The old Watcher
Games like Back rooms: The old Watcher include The Forest, Resident Evil Requiem, Hamster Hunter, Five Nights at Freddy's: Secret of the Mimic, and The Exit 8. We matched them by the tags players give Back rooms: The old Watcher on Steam (Action, Horror, Simulation, Action-Adventure, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Action · Exploration

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

Hamster Hunter
Shared: Action-Adventure · Horror · Exploration

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

The Exit 8
Shared: Horror · Walking Simulator · Exploration

Five Nights at Freddy's: Security Breach
Shared: Horror · Action · Exploration

Platform 8
Shared: Simulation · Walking Simulator · Hidden Object

Escape the Backrooms
Shared: Horror · Action · Exploration

[Chillas Art] The Closing Shift
Shared: Simulation · Action · Walking Simulator

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

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

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

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

PILGRIM
Shared: Horror · Action-Adventure · Exploration

Summon
Shared: Action · Simulation · Horror

Resident Evil 4
Shared: Action · Horror · Survival Horror

The Complex: Expedition
Shared: Horror · Action · Exploration

Happy's Humble Burger Farm
Shared: Horror · Dark Humor · First-Person

Prison Escape Simulator: Dig Out
Shared: Simulation · Action · Action-Adventure

Internet Cafe Simulator 2
Shared: Simulation · Exploration · 3D

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

Metel - Horror Escape
Shared: Horror · Action · Hidden Object

Sons Of The Forest
Shared: Horror · Exploration · Survival

The Beast Inside
Shared: Horror · Action · First-Person