Games like Boundless
Games like Boundless include Rust, ARK: Survival Evolved, Terraria, The Forest, and Conan Exiles Enhanced. We matched them by the tags players give Boundless on Steam (Open World Survival Craft, Massively Multiplayer, Sandbox, Open World, and Crafting): closest matches first, and among equally close ones the better-known games.
Rust
Shared: Open World Survival Craft · Crafting · Open World
ARK: Survival Evolved
Shared: Open World Survival Craft · Open World · Crafting
Terraria
Shared: Open World Survival Craft · Sandbox · Crafting
The Forest
Shared: Open World Survival Craft · Open World · Crafting
Conan Exiles Enhanced
Shared: Open World · Open World Survival Craft · Crafting
Raft
Shared: Open World Survival Craft · Crafting · Open World
Once Human
Shared: Open World · Open World Survival Craft · Survival
Valheim
Shared: Open World Survival Craft · Open World · Crafting
Don't Starve Together
Shared: Open World Survival Craft · Open World · Crafting
Palworld
Shared: Open World · Open World Survival Craft · Crafting
Project Zomboid
Shared: Open World Survival Craft · Open World · Sandbox
Starbound
Shared: Open World Survival Craft · Sandbox · Crafting
7 Days to Die
Shared: Open World Survival Craft · Open World · Survival
Last Oasis
Shared: Massively Multiplayer · Open World · Crafting
No Man's Sky
Shared: Open World Survival Craft · Open World · Sandbox
Craftopia
Shared: Open World · Open World Survival Craft · Crafting
SCUM
Shared: Open World Survival Craft · Massively Multiplayer · Open World
ARK: Survival Ascended
Shared: Open World · Crafting · Survival
Necesse
Shared: Open World Survival Craft · Open World · Sandbox
Miscreated
Shared: Open World Survival Craft · Open World · Massively Multiplayer
Life is Feudal: Your Own
Shared: Open World Survival Craft · Open World · Sandbox
Stranded Deep
Shared: Open World Survival Craft · Open World · Crafting
TerraTech
Shared: Sandbox · Open World Survival Craft · Open World
Don't Starve
Shared: Open World Survival Craft · Crafting · Sandbox