Games like DayZ Frostline
Games like DayZ Frostline include DayZ, Left 4 Dead 2, PUBG: BATTLEGROUNDS, Rust, and 7 Days to Die. We matched them by the tags players give DayZ Frostline on Steam (Survival, Multiplayer, Zombies, Open World, and Action): closest matches first, and among equally close ones the better-known games.

DayZ
Shared: Survival · Zombies · Open World

Left 4 Dead 2
Shared: Zombies · Multiplayer · Survival

PUBG: BATTLEGROUNDS
Shared: Survival · Multiplayer · Shooter

Rust
Shared: Survival · Multiplayer · Open World

7 Days to Die
Shared: Survival · Multiplayer · Zombies

Project Zomboid
Shared: Survival · Zombies · Multiplayer

Dying Light
Shared: Zombies · Open World · Survival

Miscreated
Shared: Survival · Multiplayer · Open World

The Isle
Shared: Survival · Multiplayer · Open World

Once Human
Shared: Multiplayer · Survival · Open World

Grand Theft Auto V Legacy
Shared: Multiplayer · Open World · Action

Killing Floor 2
Shared: Multiplayer · Zombies · Survival

Left 4 Dead
Shared: Zombies · Multiplayer · Action

Days Gone
Shared: Zombies · Survival · Open World

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

Far Cry 3
Shared: Open World · Multiplayer · Action

SURVIVAL: Postapocalypse Now
Shared: Survival · Multiplayer · Open World

Apex Legends™
Shared: Multiplayer · Shooter · PvP

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

Tom Clancy’s The Division™
Shared: Multiplayer · Open World · Action

Arma 3
Shared: Multiplayer · Action · Shooter

Don't Starve Together
Shared: Survival · Multiplayer · Open World

Back 4 Blood
Shared: Zombies · Multiplayer · Shooter

Deadside
Shared: Survival · Multiplayer · PvP