Games like Simulacrum
Games like Simulacrum include ULTRAKILL, Devil Daggers, Counter-Strike 2, DOOM Eternal, and Swarmlake. We matched them by the tags players give Simulacrum on Steam (Action, Arena Shooter, FPS, Fast-Paced, and Fantasy): closest matches first, and among equally close ones the better-known games.

ULTRAKILL
Shared: Fast-Paced · FPS · Arena Shooter

Devil Daggers
Shared: FPS · Action · Fast-Paced

Counter-Strike 2
Shared: FPS · Action · Shooter

DOOM Eternal
Shared: Action · FPS · Fast-Paced

Swarmlake
Shared: Action · FPS · Fast-Paced

DOOM
Shared: Action · FPS · Fast-Paced

HYPER DEMON
Shared: FPS · Arena Shooter · Fast-Paced

Post Void
Shared: FPS · Fast-Paced · Difficult

BioShock Infinite
Shared: Action · FPS · Shooter

STRAFTAT
Shared: Action · FPS · Arena Shooter

Titanfall® 2
Shared: FPS · Action · Shooter

SUPERHOT
Shared: Action · FPS · Singleplayer

Turbo Overkill
Shared: Action · FPS · Fast-Paced

Call of Duty®
Shared: FPS · Action · Shooter

Warhammer 40,000: Boltgun
Shared: FPS · Action · Retro

Battlefield™ 2042
Shared: FPS · Action · Shooter

DUSK
Shared: FPS · Fast-Paced · Retro

MULLET MADJACK
Shared: FPS · Action · Fast-Paced

Quake III Arena
Shared: Arena Shooter · Action · FPS

Battlefield™ 6
Shared: FPS · Action · Shooter

Quake Live
Shared: Arena Shooter · FPS · Action

Half-Life 2
Shared: Action · FPS · Singleplayer

I Am Your Beast
Shared: FPS · Fast-Paced · Arena Shooter

ARMORED HEAD
Shared: Arena Shooter · FPS · Action