Games like Orbit HD
Games like Orbit HD include Universe Sandbox, Kerbal Space Program, Exo One, Kerbal Space Program 2, and Hardspace: Shipbreaker. We matched them by the tags players give Orbit HD on Steam (Space, Physics, Puzzle, Relaxing, and Atmospheric): closest matches first, and among equally close ones the better-known games.
Universe Sandbox
Shared: Space · Physics · Simulation
Kerbal Space Program
Shared: Space · Physics · Simulation
Exo One
Shared: Space · Atmospheric · Physics
Kerbal Space Program 2
Shared: Space · Physics · Exploration
Hardspace: Shipbreaker
Shared: Space · Physics · Simulation
Outer Wilds
Shared: Space · Exploration · Puzzle
Space Engineers
Shared: Space · Physics · Simulation
Spaceflight Simulator
Shared: Space · Space Sim · Simulation
No Man's Sky
Shared: Space · Exploration · Adventure
Empyrion - Galactic Survival
Shared: Space · Simulation · Physics
Elite Dangerous
Shared: Space · Space Sim · Simulation
Deliver Us The Moon
Shared: Space · Atmospheric · Adventure
Universe Sandbox
Shared: Space · Physics · Simulation
Zup! S
Shared: Puzzle · Physics · Relaxing
Solar 2
Shared: Space · Relaxing · Simulation
Big Walk
Shared: Puzzle · Relaxing · Exploration
ABZU
Shared: Relaxing · Atmospheric · Exploration
Heavenly Bodies
Shared: Physics · Space · Puzzle
Superflight
Shared: Relaxing · Atmospheric · Physics
Totally Accurate Battle Simulator
Shared: Physics · Simulation · Sandbox
EVE Online
Shared: Space · Space Sim · Exploration
Unpacking
Shared: Relaxing · Puzzle · Casual
Garry's Mod
Shared: Physics · Sandbox · Casual
DAVE THE DIVER
Shared: Relaxing · Casual · Exploration