Games like Return to Lumia
Games like Return to Lumia include Terraria, Core Keeper, Enshrouded, Forager, and Starbound. We matched them by the tags players give Return to Lumia on Steam (Sandbox, Crafting, Exploration, RPG, and Base Building): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · Crafting · Exploration

Core Keeper
Shared: Exploration · Sandbox · Open World

Enshrouded
Shared: Open World · Base Building · Crafting

Forager
Shared: Crafting · Sandbox · Pixel Graphics

Starbound
Shared: Sandbox · Crafting · Adventure

Valheim
Shared: Crafting · Open World · Exploration

Necesse
Shared: Sandbox · Crafting · Open World

Hogwarts Legacy
Shared: Open World · RPG · Exploration

Rust
Shared: Crafting · Sandbox · Open World

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

Dune: Awakening
Shared: Exploration · Sandbox · Base Building

Once Human
Shared: Open World · Action · Exploration

Crashlands
Shared: RPG · Exploration · Open World

Satisfactory
Shared: Crafting · Base Building · Open World

The Forest
Shared: Crafting · Open World · Adventure

Fallout 4
Shared: Exploration · Open World · RPG

ARK: Survival Evolved
Shared: Crafting · Open World · Base Building

DYSMANTLE
Shared: Crafting · Open World · Base Building

Palworld
Shared: Open World · Crafting · Sandbox

Kenshi
Shared: Sandbox · Open World · RPG

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

Grounded
Shared: Crafting · Base Building · Open World

Don't Starve
Shared: Crafting · Sandbox · Adventure

Don't Starve Together
Shared: Crafting · Sandbox · Open World