Games like Soulmask
Games like Soulmask include Valheim, Rust, Terraria, Don't Starve Together, and ARK: Survival Evolved. We matched them by the tags players give Soulmask on Steam (Open World Survival Craft, Survival, Base Building, Crafting, and Open World): closest matches first, and among equally close ones the better-known games.

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

Rust
Shared: Survival · Crafting · Open World Survival Craft

Terraria
Shared: Open World Survival Craft · Survival · Sandbox

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

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

Raft
Shared: Survival · Open World Survival Craft · Crafting

Dune: Awakening
Shared: Open World Survival Craft · Survival · Base Building

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

Satisfactory
Shared: Base Building · Crafting · Open World

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

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

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

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

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

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

ASTRONEER
Shared: Open World Survival Craft · Survival · Open World

ARK: Survival Ascended
Shared: Survival · Open World · Base Building

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

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

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

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

V Rising
Shared: Survival · Base Building · Open World

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

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