Games like Hospital 9
Games like Hospital 9 include Resident Evil Requiem, Left 4 Dead 2, Far Cry® 5, Far Cry® 6, and Atomic Heart. We matched them by the tags players give Hospital 9 on Steam (Horror, FPS, Exploration, Shooter, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

Resident Evil Requiem
Shared: Horror · FPS · Zombies

Left 4 Dead 2
Shared: FPS · Shooter · Horror

Far Cry® 5
Shared: FPS · Action-Adventure · Shooter

Far Cry® 6
Shared: FPS · Shooter · Action-Adventure

Atomic Heart
Shared: FPS · Horror · Action-Adventure

Ready or Not
Shared: FPS · Shooter · Horror

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

Half-Life 2
Shared: FPS · Action · Shooter

Black Mesa
Shared: FPS · Shooter · Action

Twisted Tower
Shared: Horror · Shooter · Exploration

Choo-Choo Charles
Shared: Horror · Shooter · First-Person

Call of Duty®: Black Ops III
Shared: FPS · Shooter · Zombies

Metro Exodus
Shared: FPS · Horror · Action

Five Nights at Freddy's: Security Breach
Shared: Horror · Exploration · First-Person

Left 4 Dead
Shared: FPS · Horror · Zombies

DOOM
Shared: FPS · Shooter · Action

Project Silverfish
Shared: FPS · Exploration · Horror

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · First-Person · Exploration

METRO 2033 Redux
Shared: FPS · Horror · Shooter

Resident Evil Village
Shared: Horror · First-Person · Action

Back 4 Blood
Shared: FPS · Shooter · Horror

BioShock Infinite
Shared: FPS · Shooter · Action

VLADiK BRUTAL
Shared: FPS · Shooter · First-Person