Games like ORBITAL
Games like ORBITAL include Elite Dangerous, Kerbal Space Program, No Man's Sky, X4: Foundations, and EVE Online. We matched them by the tags players give ORBITAL on Steam (Adventure, Space, Space Sim, Sci-fi, and Simulation): closest matches first, and among equally close ones the better-known games.
Elite Dangerous
Shared: Space · Space Sim · Sci-fi
Kerbal Space Program
Shared: Space · Simulation · Space Sim
No Man's Sky
Shared: Space · Sci-fi · Adventure
X4: Foundations
Shared: Space · Space Sim · Simulation
EVE Online
Shared: Space Sim · Adventure · Space
Starfield
Shared: Space · Sci-fi · Exploration
Endless Sky
Shared: Space · Sci-fi · Adventure
Empyrion - Galactic Survival
Shared: Space · Simulation · Space Sim
Kerbal Space Program 2
Shared: Space · Exploration · Simulation
Oxygen Not Included
Shared: Colony Sim · Simulation · Space
Hardspace: Shipbreaker
Shared: Space · Sci-fi · Simulation
SPORE™
Shared: Space · Simulation · Colony Sim
Exo One
Shared: Space · Adventure · Exploration
X Rebirth
Shared: Space · Simulation · Sci-fi
Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space · Space Sim
Rebel Galaxy
Shared: Space · Sci-fi · Adventure
Outer Wilds
Shared: Space · Adventure · Exploration
Spaceflight Simulator
Shared: Space · Space Sim · Simulation
Universe Sandbox
Shared: Space · Simulation · Space Sim
SPORE™ Galactic Adventures
Shared: Space · Adventure · Simulation
Stellaris
Shared: Space · Sci-fi · Simulation
V: Rings of Saturn
Shared: Space · Sci-fi · Space Sim
Dyson Sphere Program
Shared: Space · Simulation · Sci-fi
Deliver Us The Moon
Shared: Adventure · Space · Sci-fi