Games like Realms of Magic
Games like Realms of Magic include Terraria, Don't Starve Together, Rust, Forager, and Starbound. We matched them by the tags players give Realms of Magic on Steam (RPG, Open World Survival Craft, Adventure, Indie, and Open World): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Open World Survival Craft · Sandbox · Adventure

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

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

Forager
Shared: Open World Survival Craft · Indie · Pixel Graphics

Starbound
Shared: Open World Survival Craft · Adventure · Sandbox

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Core Keeper
Shared: Open World · Sandbox · Survival

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Open World · Adventure