Games like Pathogen: Code Omega
Games like Pathogen: Code Omega include DayZ, Metro Exodus, 7 Days to Die, S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition, and Left 4 Dead 2. We matched them by the tags players give Pathogen: Code Omega on Steam (Survival, Post-apocalyptic, Action, Exploration, and Base Building): closest matches first, and among equally close ones the better-known games.
DayZ
Shared: Survival · Post-apocalyptic · Open World
Metro Exodus
Shared: Post-apocalyptic · FPS · Action
7 Days to Die
Shared: Survival · Post-apocalyptic · Base Building
S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Post-apocalyptic · Survival · FPS
Left 4 Dead 2
Shared: FPS · Survival · Action
The Forest
Shared: Survival · Horror · Open World
Sons Of The Forest
Shared: Survival · Base Building · Open World
Fallout 4
Shared: Post-apocalyptic · Exploration · Open World
Subnautica
Shared: Survival · Exploration · Horror
SurrounDead
Shared: Survival · Post-apocalyptic · Exploration
METRO 2033 Redux
Shared: Post-apocalyptic · FPS · Action
METRO Last Light Redux
Shared: Post-apocalyptic · Action · FPS
Days Gone
Shared: Survival · Post-apocalyptic · Open World
Dying Light
Shared: Survival · Horror · Zombies
MISERY
Shared: Survival · Post-apocalyptic · Horror
Fallout 76
Shared: Post-apocalyptic · Survival · Open World
Generation Zero®
Shared: Survival · Post-apocalyptic · Base Building
VEIN
Shared: Survival · Post-apocalyptic · Base Building
Once Human
Shared: Survival · Action · Open World
Left 4 Dead
Shared: Action · FPS · Survival
Killing Floor
Shared: Survival · FPS · Action
Subnautica: Below Zero
Shared: Survival · Exploration · Horror
Killing Floor 2
Shared: Post-apocalyptic · FPS · Zombies
Fallout: New Vegas
Shared: Post-apocalyptic · Open World · Exploration