Games like Project: Mist
Games like Project: Mist include The Forest, Rust, MISERY, Don't Starve Together, and Valheim. We matched them by the tags players give Project: Mist on Steam (Open World Survival Craft, Online Co-Op, Open World, Horror, and Survival Horror): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Open World Survival Craft · Open World · Horror

Rust
Shared: Open World Survival Craft · Open World · Multiplayer

MISERY
Shared: Online Co-Op · Post-apocalyptic · Horror

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

Valheim
Shared: Open World Survival Craft · Online Co-Op · Open World

7 Days to Die
Shared: Open World Survival Craft · Open World · Multiplayer

Dying Light
Shared: Online Co-Op · Horror · Survival Horror

DayZ
Shared: Open World · Online Co-Op · Post-apocalyptic

Green Hell
Shared: Open World Survival Craft · Online Co-Op · Open World

Palworld
Shared: Open World · Open World Survival Craft · Online Co-Op

Raft
Shared: Open World Survival Craft · Open World · Multiplayer

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

Terraria
Shared: Open World Survival Craft · Multiplayer · Open World

Project Zomboid
Shared: Open World · Open World Survival Craft · Multiplayer

Once Human
Shared: Open World · Open World Survival Craft · Multiplayer

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

Subnautica
Shared: Open World Survival Craft · Horror · Open World

Grounded
Shared: Open World Survival Craft · Multiplayer · Open World

RuneScape: Dragonwilds
Shared: Open World · Open World Survival Craft · Online Co-Op

ICARUS
Shared: Open World Survival Craft · Online Co-Op · Open World

Subnautica: Below Zero
Shared: Open World Survival Craft · Open World · Horror

Conan Exiles Enhanced
Shared: Open World · Open World Survival Craft · Multiplayer

The Long Dark
Shared: Open World Survival Craft · Open World · Post-apocalyptic

Left 4 Dead 2
Shared: Online Co-Op · Multiplayer · Shooter