Games like Rocket Engineer
Games like Rocket Engineer include Kerbal Space Program, Spaceflight Simulator, Kerbal Space Program 2, Universe Sandbox, and X4: Foundations. We matched them by the tags players give Rocket Engineer on Steam (Simulation, Sandbox, Space Sim, Exploration, and 2D): closest matches first, and among equally close ones the better-known games.
Kerbal Space Program
Shared: Simulation · Sandbox · Space Sim
Spaceflight Simulator
Shared: Sandbox · Space Sim · Simulation
Kerbal Space Program 2
Shared: Sandbox · Exploration · Simulation
Universe Sandbox
Shared: Simulation · Sandbox · Space Sim
X4: Foundations
Shared: Simulation · Space Sim · Sandbox
Space Engineers
Shared: Sandbox · Simulation · Space
Oxygen Not Included
Shared: Sandbox · Simulation · 2D
Avorion
Shared: Sandbox · Space Sim · Exploration
Elite Dangerous
Shared: Space Sim · Simulation · Exploration
SPORE™
Shared: Sandbox · Simulation · Exploration
Dyson Sphere Program
Shared: Simulation · Sandbox · Space
SpaceEngine
Shared: Sandbox · Space Sim · Simulation
Prison Architect
Shared: Simulation · Sandbox · 2D
鬼谷八荒 Tale of Immortal
Shared: Simulation · Sandbox · Management
Empyrion - Galactic Survival
Shared: Simulation · Exploration · Space Sim
EVE Online
Shared: Space Sim · Exploration · Simulation
RimWorld
Shared: Sandbox · Simulation · Management
Stormworks: Build and Rescue
Shared: Sandbox · Flight · Exploration
People Playground
Shared: Sandbox · Simulation · 2D
Stellaris
Shared: Sandbox · Simulation · Exploration
Aviassembly
Shared: Sandbox · Flight · Exploration
Ostranauts
Shared: Simulation · Space Sim · Sandbox
Space Haven
Shared: Simulation · Sandbox · Management
Cities: Skylines
Shared: Simulation · Sandbox · Management