Games like PermaNight
Games like PermaNight include Left 4 Dead 2, DayZ, Dying Light, Metro Exodus, and S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition. We matched them by the tags players give PermaNight on Steam (Survival, Exploration, FPS, Survival Horror, and Shooter): closest matches first, and among equally close ones the better-known games.

Left 4 Dead 2
Shared: FPS · Zombies · Survival

DayZ
Shared: Survival · Zombies · Post-apocalyptic

Dying Light
Shared: Survival Horror · Zombies · Survival

Metro Exodus
Shared: FPS · Post-apocalyptic · Survival

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: FPS · Survival · Post-apocalyptic

Resident Evil Requiem
Shared: Survival Horror · FPS · Zombies

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

PUBG: BATTLEGROUNDS
Shared: Survival · Shooter · FPS

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

Killing Floor 2
Shared: FPS · Zombies · Post-apocalyptic

The Forest
Shared: Survival · Survival Horror · Exploration

Fallout 4
Shared: Exploration · Post-apocalyptic · Shooter

The Last of Us™ Part I
Shared: Post-apocalyptic · Survival · Zombies

7 Days to Die
Shared: Survival · Zombies · Post-apocalyptic

Left 4 Dead
Shared: FPS · Zombies · Survival

Far Cry® 5
Shared: FPS · Exploration · Shooter

No More Room in Hell 2
Shared: Survival · Zombies · Survival Horror

Killing Floor
Shared: FPS · Survival · Zombies

Sons Of The Forest
Shared: Survival · Survival Horror · Exploration

Pacific Drive
Shared: Survival · Exploration · Survival Horror

Subnautica 2
Shared: Survival · Exploration · Survival Horror

Contagion
Shared: FPS · Zombies · Post-apocalyptic

Back 4 Blood
Shared: FPS · Zombies · Shooter

Resident Evil Village
Shared: Survival Horror · First-Person · Zombies