Games like Stellar Industrialist
Games like Stellar Industrialist include Stellaris, Dyson Sphere Program, Hardspace: Shipbreaker, X4: Foundations, and FTL: Faster Than Light. We matched them by the tags players give Stellar Industrialist on Steam (Strategy, Simulation, Casual, Space, and Space Sim): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Strategy · Space · Sci-fi

Dyson Sphere Program
Shared: Space · Simulation · Resource Management

Hardspace: Shipbreaker
Shared: Simulation · Space · Sci-fi

X4: Foundations
Shared: Simulation · Space · Space Sim

FTL: Faster Than Light
Shared: Strategy · Space · Sci-fi

SPORE™
Shared: Simulation · Space · Casual

Elite Dangerous
Shared: Space · Space Sim · Simulation

Kerbal Space Program
Shared: Simulation · Space · Space Sim

SpaceEngine
Shared: Casual · Sci-fi · Space

Universe Sandbox
Shared: Simulation · Space · Space Sim

Starpoint Gemini Warlords
Shared: Strategy · Space · Simulation

X Rebirth
Shared: Simulation · Space · Sci-fi

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Space · Sci-fi

Cities: Skylines
Shared: Simulation · Strategy · Resource Management

Europa Universalis V
Shared: Strategy · Simulation · Resource Management

Space Haven
Shared: Strategy · Space · Simulation

X3: Terran Conflict
Shared: Simulation · Space · Strategy

Anno 2205™
Shared: Strategy · Simulation · Sci-fi

Distant Worlds 2
Shared: Strategy · Simulation · Space

No Man's Sky
Shared: Space · Sci-fi · Procedural Generation

Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space · Strategy

Manor Lords
Shared: Strategy · Simulation · Resource Management

Hearts of Iron IV
Shared: Strategy · Simulation · War

Europa Universalis IV
Shared: Strategy · Simulation · Grand Strategy