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

Left 4 Dead 2
Shared: Shooter · FPS · Action

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

Resident Evil Requiem
Shared: Action · FPS · Horror

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

DayZ
Shared: Shooter · Post-apocalyptic · Zombies

Dying Light
Shared: Horror · First-Person · Survival Horror

Ready or Not
Shared: Shooter · FPS · Realistic

Metro Exodus
Shared: FPS · Action · Post-apocalyptic

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · FPS

Fallout 4
Shared: Exploration · Shooter · Post-apocalyptic

Bodycam
Shared: FPS · Shooter · Realistic

Squad
Shared: FPS · Realistic · Shooter

Arma 3
Shared: Action · Shooter · First-Person

Call of Duty®
Shared: Shooter · Action · FPS

METRO 2033 Redux
Shared: FPS · Action · Post-apocalyptic

Left 4 Dead
Shared: Action · FPS · Shooter

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

Insurgency: Sandstorm
Shared: Shooter · FPS · Action

Killing Floor 2
Shared: FPS · Shooter · Action

Far Cry® 4
Shared: Action · FPS · Shooter

METRO Last Light Redux
Shared: Action · FPS · Post-apocalyptic

Far Cry 3
Shared: Action · FPS · Shooter

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

Atomic Heart
Shared: Action · FPS · Action-Adventure