Games like Roaming The Stars
Games like Roaming The Stars include Avorion, Empyrion - Galactic Survival, No Man's Sky, Space Engineers, and Starbound. We matched them by the tags players give Roaming The Stars on Steam (Voxel, Space, Exploration, Sandbox, and Survival): closest matches first, and among equally close ones the better-known games.

Avorion
Shared: Exploration · Sandbox · Space

Empyrion - Galactic Survival
Shared: Space · Survival · Exploration

No Man's Sky
Shared: Space · Exploration · Survival

Space Engineers
Shared: Space · Sandbox · Survival

Starbound
Shared: Space · Sandbox · Survival

EVE Online
Shared: Exploration · Space · Sandbox

ASTRONEER
Shared: Space · Exploration · Survival

7 Days to Die
Shared: Survival · Voxel · Exploration

Elite Dangerous
Shared: Space · Exploration · Space Sim

轮回修仙路
Shared: Exploration · Space · Flight

X4: Foundations
Shared: Space · Exploration · Sandbox

Terraria
Shared: Sandbox · Survival · Exploration

Dune: Awakening
Shared: Exploration · Survival · Sandbox

Kerbal Space Program
Shared: Space · Sandbox · Simulation

Escape From Duckov
Shared: Exploration · Third-Person Shooter · Survival

Kerbal Space Program 2
Shared: Space · Exploration · Sandbox

Ostranauts
Shared: Sandbox · Flight · Space

PUBG: BATTLEGROUNDS
Shared: Survival · Third-Person Shooter · Shooter

ICARUS
Shared: Survival · Exploration · Space

Core Keeper
Shared: Exploration · Survival · Sandbox

Creativerse
Shared: Voxel · Exploration · Sandbox

Don't Starve
Shared: Survival · Sandbox · Exploration

Trailmakers
Shared: Space · Sandbox · Flight

EVERSPACE™ 2
Shared: Space · Exploration · Shooter