Games like Backrooms: The Last Observer
Games like Backrooms: The Last Observer include The Exit 8, Inside the Backrooms, Platform 8, The Long Dark, and The Forest. We matched them by the tags players give Backrooms: The Last Observer on Steam (Exploration, FPS, Collectathon, Puzzle, and Survival): closest matches first, and among equally close ones the better-known games.

The Exit 8
Shared: Exploration · Puzzle · Walking Simulator

Inside the Backrooms
Shared: Puzzle · Exploration · FPS

Platform 8
Shared: Exploration · Puzzle · Simulation

The Long Dark
Shared: Exploration · Survival · Simulation

The Forest
Shared: Survival · Exploration · Adventure

theHunter: Call of the Wild™
Shared: FPS · Stealth · Simulation

Subnautica 2
Shared: Exploration · Survival · Horror

Drive Beyond Horizons
Shared: Exploration · Survival · Simulation

PUBG: BATTLEGROUNDS
Shared: Survival · FPS · First-Person

Far Cry® 5
Shared: FPS · Exploration · Stealth

Scanner Sombre
Shared: Exploration · Walking Simulator · Adventure

Supraland
Shared: Exploration · FPS · Puzzle

Metro Exodus
Shared: FPS · Survival · Exploration

Lethal Company
Shared: Exploration · First-Person · Horror

Deep Rock Galactic
Shared: FPS · Exploration · PvE

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: FPS · Survival · Exploration

Killer Frequency
Shared: Puzzle · Simulation · Exploration

The Long Drive
Shared: Exploration · Survival · Simulation

Thief Simulator
Shared: Simulation · Stealth · First-Person

Outer Wilds
Shared: Exploration · Puzzle · Adventure

Hello Neighbor
Shared: Stealth · First-Person · Survival

Subnautica
Shared: Survival · Exploration · Horror

Into the Radius VR
Shared: FPS · Survival · PvE

Poppy Playtime
Shared: Puzzle · Survival · First-Person