Games like Universe Sandbox
Games like Universe Sandbox include Kerbal Space Program, Kerbal Space Program 2, SpaceEngine, BeamNG.drive, and Universe Sandbox. We matched them by the tags players give Universe Sandbox on Steam (Simulation, Sandbox, Space, Space Sim, and Physics): closest matches first, and among equally close ones the better-known games.
Kerbal Space Program
Shared: Simulation · Space · Sandbox
Kerbal Space Program 2
Shared: Sandbox · Space · Simulation
SpaceEngine
Shared: Sandbox · Space · Space Sim
BeamNG.drive
Shared: Simulation · Physics · Sandbox
Universe Sandbox
Shared: Simulation · Sandbox · Space
SPORE™
Shared: Sandbox · Simulation · Space
Spaceflight Simulator
Shared: Sandbox · Simulation · Space
Space Engineers
Shared: Sandbox · Space · Simulation
Hardspace: Shipbreaker
Shared: Simulation · Space · Physics
X4: Foundations
Shared: Simulation · Space · Space Sim
Elite Dangerous
Shared: Space · Space Sim · Simulation
Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Physics
Solar Expanse - Space Exploration Manager
Shared: Simulation · Space · Sandbox
Empyrion - Galactic Survival
Shared: Simulation · Space · Sandbox
Space Engineers 2
Shared: Sandbox · Space · Simulation
Goat Simulator
Shared: Simulation · Sandbox · Physics
Planet Coaster
Shared: Simulation · Sandbox · Relaxing
X-Plane 11
Shared: Simulation · Realistic · Sandbox
Solar 2
Shared: Space · Sandbox · Simulation
Cell to Singularity - Evolution Never Ends
Shared: Simulation · Science · Space
Cooking Simulator
Shared: Simulation · Sandbox · Realistic
Brick Rigs
Shared: Sandbox · Simulation · Physics
No Man's Sky
Shared: Space · Sandbox · Open World
Garry's Mod
Shared: Sandbox · Physics · Simulation