Games like Rocket Science: Edition Upgrade
Games like Rocket Science: Edition Upgrade include Kerbal Space Program, Dyson Sphere Program, Universe Sandbox, X4: Foundations, and Hardspace: Shipbreaker. We matched them by the tags players give Rocket Science: Edition Upgrade on Steam (Simulation, Strategy, Mars, Resource Management, and Space Sim): closest matches first, and among equally close ones the better-known games.
Kerbal Space Program
Shared: Simulation · Sandbox · Space Sim
Dyson Sphere Program
Shared: Simulation · Resource Management · Strategy
Universe Sandbox
Shared: Simulation · Sandbox · Space Sim
X4: Foundations
Shared: Simulation · Space Sim · Strategy
Hardspace: Shipbreaker
Shared: Simulation · Physics · Sci-fi
Space Engineers
Shared: Simulation · Sandbox · Physics
RimWorld
Shared: Strategy · Simulation · Sandbox
Stellaris
Shared: Strategy · Simulation · Sandbox
Elite Dangerous
Shared: Space Sim · Simulation · Sci-fi
Manor Lords
Shared: Strategy · Simulation · Resource Management
Oxygen Not Included
Shared: Resource Management · Simulation · Strategy
Cities: Skylines
Shared: Simulation · Strategy · Sandbox
Kerbal Space Program 2
Shared: Sandbox · Simulation · Physics
Factorio
Shared: Resource Management · Strategy · Sandbox
Space Haven
Shared: Strategy · Simulation · Sandbox
SPORE™
Shared: Simulation · Sandbox · Open World
Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Sandbox
Prison Architect
Shared: Simulation · Strategy · Sandbox
Against the Storm
Shared: Simulation · Strategy · Resource Management
SpaceEngine
Shared: Sandbox · Space Sim · Sci-fi
Jurassic World Evolution
Shared: Simulation · Strategy · Sandbox
X Rebirth
Shared: Simulation · Space Sim · Sandbox
Kingdoms and Castles
Shared: Simulation · Resource Management · Strategy
Empyrion - Galactic Survival
Shared: Simulation · Space Sim · Sandbox