Games like Backrooms: The Endless Halls
Games like Backrooms: The Endless Halls include PUBG: BATTLEGROUNDS, Far Cry® 4, Far Cry 3, Metro Exodus, and Rise of the Tomb Raider™. We matched them by the tags players give Backrooms: The Endless Halls on Steam (Exploration, FPS, Collectathon, Hidden Object, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: FPS · Survival · Action

Far Cry® 4
Shared: FPS · Action · Adventure

Far Cry 3
Shared: FPS · Action · Stealth

Metro Exodus
Shared: FPS · Action · Exploration

Rise of the Tomb Raider™
Shared: Action · Exploration · Adventure

Far Cry® Primal
Shared: Action · Exploration · Survival

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

Slime Rancher
Shared: Exploration · Adventure · Simulation

Aimlabs
Shared: FPS · Action · Simulation

Far Cry® 5
Shared: FPS · Exploration · Action

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

VLADiK BRUTAL
Shared: FPS · Action · Casual

Drive Beyond Horizons
Shared: Exploration · Survival · Simulation

Thief Simulator
Shared: Simulation · Stealth · Action

The Long Dark
Shared: Exploration · Survival · Simulation

Deep Rock Galactic
Shared: FPS · Exploration · PvE

Supraland
Shared: Exploration · FPS · Puzzle

The Forest
Shared: Survival · Exploration · Action

Librarian: Tidy Up the Arcane Library!
Shared: Collectathon · Hidden Object · Puzzle

Witch It
Shared: Hidden Object · Casual · Action

Fallout 4
Shared: Exploration · FPS · Action

Far Cry® 2
Shared: FPS · Action · Exploration

The Long Drive
Shared: Exploration · Survival · Simulation

Left 4 Dead 2
Shared: FPS · Action · Survival