Games like Survival Nation
Games like Survival Nation include 7 Days to Die, Rust, Project Zomboid, DayZ, and Days Gone. We matched them by the tags players give Survival Nation on Steam (Zombies, Survival, Open World, Multiplayer, and Action): closest matches first, and among equally close ones the better-known games.

7 Days to Die
Shared: Zombies · Survival · Open World

Rust
Shared: Survival · Open World · Multiplayer

Project Zomboid
Shared: Zombies · Survival · Open World

DayZ
Shared: Survival · Zombies · Open World

Days Gone
Shared: Zombies · Open World · Survival

Enshrouded
Shared: Survival · Open World · Multiplayer

Miscreated
Shared: Survival · Open World · Zombies

Once Human
Shared: Open World · Survival · Multiplayer

Dying Light
Shared: Zombies · Open World · Survival

Fallout 4
Shared: Open World · Post-apocalyptic · Exploration

VEIN
Shared: Survival · Zombies · Open World

Fallout: New Vegas
Shared: Open World · Post-apocalyptic · Action

Sons Of The Forest
Shared: Survival · Open World · Multiplayer

ARK: Survival Evolved
Shared: Survival · Open World · Multiplayer

Left 4 Dead 2
Shared: Zombies · Multiplayer · Survival

Terraria
Shared: Survival · Multiplayer · Open World

Monster Hunter: World
Shared: Multiplayer · Open World · Action

ARK: Survival Ascended
Shared: Survival · Open World · Multiplayer

Palworld
Shared: Survival · Open World · Multiplayer

Valheim
Shared: Survival · Open World · Multiplayer

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

No Man's Sky
Shared: Open World · Survival · Multiplayer

The Forest
Shared: Survival · Open World · Crafting

Green Hell
Shared: Survival · Multiplayer · Open World