Games like SCP: Daybreak
Games like SCP: Daybreak include Aimlabs, Resident Evil Requiem, [Chillas Art] The Closing Shift, VLADiK BRUTAL, and Hail to the Rainbow. We matched them by the tags players give SCP: Daybreak on Steam (Action, Adventure, Simulation, Puzzle, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

Aimlabs
Shared: Action · Simulation · FPS

Resident Evil Requiem
Shared: Action · FPS · First-Person

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

VLADiK BRUTAL
Shared: Action · FPS · Adventure

Hail to the Rainbow
Shared: Action · Adventure · Puzzle

Atomic Heart
Shared: Adventure · Action · FPS

Half-Life 2
Shared: Action · FPS · Adventure

Platform 8
Shared: Adventure · Simulation · Walking Simulator

Arma 3
Shared: Action · Simulation · First-Person

Counter-Strike 2
Shared: Action · FPS · First-Person

Contraband Police
Shared: Simulation · Action · First-Person

Killer Frequency
Shared: Adventure · Puzzle · Simulation

BONEWORKS
Shared: Action · Adventure · Puzzle

PUBG: BATTLEGROUNDS
Shared: Action · FPS · Adventure

BioShock Infinite
Shared: Action · FPS · Adventure

Arma Reforger
Shared: Simulation · Action · FPS

Black Mesa
Shared: Action · FPS · First-Person

Ready or Not
Shared: FPS · Action · Realistic

Doll Impostor
Shared: Action · Adventure · Walking Simulator

SUPERHOT
Shared: Action · FPS · Puzzle

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

METRO Last Light Redux
Shared: Action · FPS · First-Person

KovaaK's
Shared: Action · Simulation · FPS

Half-Life: Opposing Force
Shared: Action · FPS · Adventure