Games like Offworlders: Galactic Ventures
Games like Offworlders: Galactic Ventures include Elite Dangerous, EVE Online, No Man's Sky, Endless Sky, and Starcom: Unknown Space. We matched them by the tags players give Offworlders: Galactic Ventures on Steam (Space Sim, Trading, Top-Down Shooter, Exploration, and Twin Stick Shooter): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space Sim · Exploration · Space

EVE Online
Shared: Space Sim · Exploration · Trading

No Man's Sky
Shared: Exploration · Space · Sci-fi

Endless Sky
Shared: Space · Sci-fi · Trading

Starcom: Unknown Space
Shared: Space Sim · Exploration · Top-Down Shooter

X4: Foundations
Shared: Space Sim · Exploration · Space

Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space Sim · Space

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

Kerbal Space Program
Shared: Space Sim · Space · Simulation

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

Rebel Galaxy
Shared: Space Sim · Space · Sci-fi

Starfield
Shared: Space · Exploration · Sci-fi

Starcom: Nexus
Shared: Exploration · Sci-fi · Space

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

Avorion
Shared: Space Sim · Exploration · Space

Deliver Us The Moon
Shared: Sci-fi · Space · Space Sim

Star Valor
Shared: Space · Exploration · Top-Down Shooter

Spaceflight Simulator
Shared: Space Sim · Exploration · Space

Dome Keeper
Shared: Sci-fi · Combat · Action

Halo: Spartan Assault
Shared: Top-Down Shooter · Sci-fi · Twin Stick Shooter

Starminer
Shared: Space Sim · Trading · Sci-fi

Empyrion - Galactic Survival
Shared: Space Sim · Space · Exploration

Outer Wilds
Shared: Exploration · Space · Adventure

Minishoot' Adventures
Shared: Twin Stick Shooter · Exploration · Top-Down Shooter