Games like Worlds Adrift Island Creator
Games like Worlds Adrift Island Creator include Once Human, Where Winds Meet, Project Zomboid, Stardew Valley, and Space Engineers. We matched them by the tags players give Worlds Adrift Island Creator on Steam (Simulation, Free to Play, Building, Indie, and Open World): closest matches first, and among equally close ones the better-known games.

Once Human
Shared: Free to Play · Open World · Multiplayer

Where Winds Meet
Shared: Free to Play · Open World · Multiplayer

Project Zomboid
Shared: Open World · Multiplayer · Building

Stardew Valley
Shared: Simulation · Multiplayer · Indie

Space Engineers
Shared: Building · Simulation · Open World

Schedule I
Shared: Simulation · Open World · Multiplayer

Fishing Planet
Shared: Free to Play · Simulation · Multiplayer

7 Days to Die
Shared: Open World · Multiplayer · Building

Destiny 2
Shared: Free to Play · Open World · Multiplayer

Rust
Shared: Open World · Building · Multiplayer

Sons Of The Forest
Shared: Open World · Multiplayer · Building

Medieval Dynasty
Shared: Building · Multiplayer · Open World

My Summer Car
Shared: Simulation · Open World · Building

Palia
Shared: Free to Play · Multiplayer · Building

Scrap Mechanic
Shared: Building · Open World · Multiplayer

The Sims™ 4
Shared: Free to Play · Simulation · Building

Raft
Shared: Multiplayer · Building · Open World

ContractVille
Shared: Simulation · Building · Multiplayer

Palworld
Shared: Open World · Multiplayer · Indie

Empyrion - Galactic Survival
Shared: Simulation · Building · Open World

House Flipper
Shared: Simulation · Building · Multiplayer

Brick Rigs
Shared: Building · Open World · Multiplayer

Paralives
Shared: Simulation · Building · Indie

Besiege
Shared: Simulation · Building · Multiplayer