Games like Galactic Simulator
Games like Galactic Simulator include Universe Sandbox, Elite Dangerous, Kerbal Space Program, SpaceEngine, and Stellaris. We matched them by the tags players give Galactic Simulator on Steam (Idler, Simulation, Space, Space Sim, and Sandbox): closest matches first, and among equally close ones the better-known games.
Universe Sandbox
Shared: Simulation · Space · Sandbox
Elite Dangerous
Shared: Space · Space Sim · Simulation
Kerbal Space Program
Shared: Simulation · Space · Sandbox
SpaceEngine
Shared: Space · Sandbox · Space Sim
Stellaris
Shared: Space · Strategy · Simulation
Space Engineers
Shared: Space · Sandbox · Simulation
X4: Foundations
Shared: Simulation · Space · Space Sim
Empyrion - Galactic Survival
Shared: Simulation · Space · Space Sim
PowerWash Simulator
Shared: Simulation · Casual · Sandbox
Garry's Mod
Shared: Sandbox · Simulation · Casual
Hardspace: Shipbreaker
Shared: Space · Simulation · Sandbox
Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Strategy
Bloons TD 6
Shared: Strategy · Online Co-Op · Casual
Plague Inc: Evolved
Shared: Simulation · Strategy · Casual
Nodebuster
Shared: Idler · Simulation · Strategy
Sins of a Solar Empire®: Rebellion
Shared: Simulation · Space · Online Co-Op
Vanguard Galaxy
Shared: Idler · Space · Sandbox
House Flipper
Shared: Simulation · Sandbox · Casual
Dyson Sphere Program
Shared: Space · Simulation · Sandbox
BeamNG.drive
Shared: Simulation · Realistic · Sandbox
Cookie Clicker
Shared: Idler · Incremental · Casual
Cosmoteer: Starship Architect & Commander
Shared: Space · Space Sim · Strategy
No Man's Sky
Shared: Space · Sandbox · Sci-fi
Ranch Simulator: Build, Hunt, Farm
Shared: Simulation · Online Co-Op · Realistic