Games like UNKNOWN REGION
Games like UNKNOWN REGION include 7 Days to Die, Rust, Project Zomboid, Raft, and Valheim. We matched them by the tags players give UNKNOWN REGION on Steam (Open World Survival Craft, Post-apocalyptic, Base Building, Early Access, and Crafting): closest matches first, and among equally close ones the better-known games.

7 Days to Die
Shared: Open World Survival Craft · Base Building · Post-apocalyptic

Rust
Shared: Open World Survival Craft · Crafting · Survival

Project Zomboid
Shared: Open World Survival Craft · Post-apocalyptic · Survival

Raft
Shared: Open World Survival Craft · Crafting · Survival

Valheim
Shared: Open World Survival Craft · Base Building · Survival

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

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

Palworld
Shared: Open World Survival Craft · Open World · Survival

Terraria
Shared: Open World Survival Craft · Survival · Crafting

Deadside
Shared: Open World Survival Craft · Crafting · Base Building

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

Subnautica
Shared: Open World Survival Craft · Survival · Crafting

Subsistence
Shared: Open World Survival Craft · Crafting · Base Building

Satisfactory
Shared: Base Building · Crafting · Open World

Miscreated
Shared: Open World Survival Craft · Post-apocalyptic · Open World

ICARUS
Shared: Open World Survival Craft · Base Building · Crafting

Green Hell
Shared: Open World Survival Craft · Crafting · Survival

RuneScape: Dragonwilds
Shared: Open World Survival Craft · Open World · Survival

The Planet Crafter
Shared: Open World Survival Craft · Base Building · Crafting

The Long Dark
Shared: Open World Survival Craft · Survival · Open World

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

Sons Of The Forest
Shared: Base Building · Open World · Survival

Mist Survival
Shared: Open World Survival Craft · Base Building · Survival

MISERY
Shared: Post-apocalyptic · Open World Survival Craft · Survival