Games like Exotic Matter
Games like Exotic Matter include Rust, Terraria, ARK: Survival Evolved, Don't Starve Together, and The Forest. We matched them by the tags players give Exotic Matter on Steam (Open World Survival Craft, Adventure, Indie, Early Access, and Action): closest matches first, and among equally close ones the better-known games.

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

Terraria
Shared: Open World Survival Craft · Adventure · Survival

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

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

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

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

Don't Starve
Shared: Open World Survival Craft · Adventure · Indie

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

Craftopia
Shared: Open World Survival Craft · Open World · RPG

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

Starbound
Shared: Open World Survival Craft · Adventure · Survival

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

Necesse
Shared: Open World Survival Craft · Adventure · Open World

Raft
Shared: Open World Survival Craft · Adventure · Survival

Last Oasis
Shared: Adventure · Action · RPG

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

SCUM
Shared: Open World Survival Craft · Open World · Action

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

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

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

Forager
Shared: Open World Survival Craft · Indie · Adventure

Block Story™
Shared: Adventure · Open World Survival Craft · RPG

Miscreated
Shared: Open World Survival Craft · Open World · Survival

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