Games like Sigma World Online
Games like Sigma World Online include Space Engineers, Terraria, ASTRONEER, No Man's Sky, and Empyrion - Galactic Survival. We matched them by the tags players give Sigma World Online on Steam (Exploration, Sandbox, City Builder, Building, and Survival): closest matches first, and among equally close ones the better-known games.
Space Engineers
Shared: Sandbox · Building · Survival
Terraria
Shared: Sandbox · Survival · Exploration
ASTRONEER
Shared: Exploration · Survival · Space
No Man's Sky
Shared: Exploration · Space · Survival
Empyrion - Galactic Survival
Shared: Exploration · Survival · Building
Core Keeper
Shared: Exploration · Survival · Sandbox
Valheim
Shared: Survival · Building · Exploration
The Planet Crafter
Shared: Survival · Building · Base Building
Satisfactory
Shared: Crafting · Base Building · Building
Rust
Shared: Survival · Crafting · Building
Sons Of The Forest
Shared: Survival · Building · Exploration
Scrap Mechanic
Shared: Sandbox · Building · Survival
Avorion
Shared: Exploration · Sandbox · Building
Dyson Sphere Program
Shared: Building · Space · Base Building
The Forest
Shared: Survival · Crafting · Building
7 Days to Die
Shared: Survival · Exploration · Building
Kerbal Space Program
Shared: Sandbox · Space · Building
Starbound
Shared: Sandbox · Survival · Space
Settlement Survival
Shared: City Builder · Building · Survival
ICARUS
Shared: Survival · Exploration · Crafting
Oxygen Not Included
Shared: Survival · Building · Sandbox
Dune: Awakening
Shared: Exploration · Survival · Sandbox
Timberborn
Shared: City Builder · Sandbox · Building
Once Human
Shared: Survival · Exploration · Building