Games like Avorion
Games like Avorion include X4: Foundations, Kerbal Space Program, EVE Online, Elite Dangerous, and Space Engineers. We matched them by the tags players give Avorion on Steam (Sandbox, Exploration, Space Sim, Building, and Space): closest matches first, and among equally close ones the better-known games.
X4: Foundations
Shared: Space · Space Sim · Exploration
Kerbal Space Program
Shared: Sandbox · Space · Space Sim
EVE Online
Shared: Exploration · Space Sim · Open World
Elite Dangerous
Shared: Space Sim · Exploration · Space
Space Engineers
Shared: Sandbox · Building · Space
Kerbal Space Program 2
Shared: Sandbox · Exploration · Space
No Man's Sky
Shared: Exploration · Space · Open World
Empyrion - Galactic Survival
Shared: Space · Building · Exploration
Dyson Sphere Program
Shared: Space · Building · Open World
SpaceEngine
Shared: Sandbox · Open World · Space Sim
Starminer
Shared: Sandbox · Space Sim · Space
Starbase
Shared: Building · Space Sim · Sandbox
Spaceflight Simulator
Shared: Sandbox · Space Sim · Space
ASTRONEER
Shared: Exploration · Space · Open World
Stormworks: Build and Rescue
Shared: Sandbox · Building · Open World
X Rebirth
Shared: Space · Sandbox · Space Sim
SPORE™
Shared: Sandbox · Exploration · Open World
Starfield
Shared: Space · Exploration · Open World
Aviassembly
Shared: Sandbox · Building · Exploration
Space Engineers 2
Shared: Sandbox · Building · Space
Interstellar Rift
Shared: Space Sim · Exploration · Building
SimplePlanes
Shared: Sandbox · Building · Exploration
StarMade
Shared: Sandbox · Space · Building
Ostranauts
Shared: Sandbox · Space Sim · Flight