Games like Death Horizon: Cyberfusion
Games like Death Horizon: Cyberfusion include Half-Life: Alyx, Half-Life 2, Ready or Not, PEAK, and Content Warning. We matched them by the tags players give Death Horizon: Cyberfusion on Steam (Physics, Roguelike, Shooter, Atmospheric, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

Half-Life: Alyx
Shared: Shooter · FPS · Horror

Half-Life 2
Shared: FPS · Shooter · Atmospheric

Ready or Not
Shared: Shooter · FPS · Horror

PEAK
Shared: Physics · Procedural Generation · Atmospheric

Content Warning
Shared: Procedural Generation · Horror · Physics

Left 4 Dead 2
Shared: Shooter · FPS · Horror

METRO 2033 Redux
Shared: Atmospheric · FPS · Horror

METRO Last Light Redux
Shared: Atmospheric · FPS · Horror

BONEWORKS
Shared: Physics · Shooter · Action

Call of Duty®: Black Ops III
Shared: Shooter · FPS · First-Person

Black Mesa
Shared: FPS · Shooter · Atmospheric

Bodycam
Shared: Shooter · FPS · Horror

Metro Exodus
Shared: FPS · Atmospheric · Horror

BioShock Infinite
Shared: Shooter · FPS · First-Person

Deadzone: Rogue
Shared: Roguelike · FPS · Shooter

Deep Rock Galactic
Shared: Procedural Generation · Shooter · FPS

Gunfire Reborn
Shared: Roguelike · FPS · Shooter

Left 4 Dead
Shared: Shooter · FPS · Horror

BONELAB
Shared: Physics · Shooter · FPS

BPM: BULLETS PER MINUTE
Shared: Roguelike · FPS · Shooter

Battlefield™ 2042
Shared: Shooter · FPS · First-Person

BioShock™ Remastered
Shared: Atmospheric · FPS · Horror

DOOM
Shared: Shooter · FPS · First-Person

Hot Dogs, Horseshoes & Hand Grenades
Shared: Physics · Shooter · FPS