Games like Gravity Matters
Games like Gravity Matters include SpaceEngine, X4: Foundations, Universe Sandbox, Kerbal Space Program, and Elite Dangerous. We matched them by the tags players give Gravity Matters on Steam (Casual, Simulation, Arcade, Space Sim, and 3D): closest matches first, and among equally close ones the better-known games.

SpaceEngine
Shared: Casual · Space Sim · Sci-fi

X4: Foundations
Shared: Simulation · Space Sim · Space

Universe Sandbox
Shared: Simulation · Space Sim · Space

Kerbal Space Program
Shared: Simulation · Space Sim · Space

Elite Dangerous
Shared: Space Sim · Simulation · Space

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

STAR WARS™: Squadrons
Shared: Flight · Simulation · Space

Exo One
Shared: Flight · Space · Space Sim

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Arcade · Flight · 3D

Nuclear Option
Shared: Simulation · Flight · 3D

Dyson Sphere Program
Shared: Simulation · Space · Sci-fi

Avorion
Shared: Space Sim · Flight · Space

PowerWash Simulator
Shared: Casual · Simulation · 3D

Starpoint Gemini 2
Shared: Simulation · Space Sim · Space

X Rebirth
Shared: Simulation · Space Sim · Sci-fi

Internet Cafe Simulator 2
Shared: Simulation · 3D · Arcade

V: Rings of Saturn
Shared: Sci-fi · Space · Space Sim

Universe Sandbox
Shared: Simulation · Casual · Space

Astrox Imperium
Shared: Simulation · Space Sim · Space

Galaxy on Fire 2™ Full HD
Shared: Space Sim · Arcade · Space

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

Space Rock Breaker
Shared: Casual · Arcade · Top-Down

Solar Expanse - Space Exploration Manager
Shared: Simulation · Space · 3D

DrainSim
Shared: Casual · Simulation · 3D