Games like Starpoint Gemini 2: Origins
Games like Starpoint Gemini 2: Origins include Elite Dangerous, Starpoint Gemini 2, EVE Online, Between the Stars, and Universe Sandbox. We matched them by the tags players give Starpoint Gemini 2: Origins on Steam (Action, Simulation, RPG, Space Sim, and Space): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space Sim · Space · Simulation

Starpoint Gemini 2
Shared: Simulation · RPG · Space

EVE Online
Shared: Space Sim · Simulation · Space

Between the Stars
Shared: Action · RPG · Simulation

Universe Sandbox
Shared: Simulation · Space Sim · Space

Rebel Galaxy
Shared: Space · RPG · Action

X Rebirth
Shared: Simulation · Action · Space

Kerbal Space Program
Shared: Simulation · Space · Space Sim

Starpoint Gemini Warlords
Shared: RPG · Space · Simulation

Stardew Valley
Shared: RPG · Simulation · Relaxing

Starpoint Gemini 3
Shared: Simulation · RPG · Space

X4: Foundations
Shared: Simulation · Space · Space Sim

SPORE™ Galactic Adventures
Shared: Action · Simulation · Space

Space Rangers HD: A War Apart
Shared: RPG · Space · Simulation

Endless Sky
Shared: Space · Simulation · RPG

鬼谷八荒 Tale of Immortal
Shared: Simulation · RPG · Action

House of the Dying Sun
Shared: Action · Simulation · Space

SpaceBourne 2
Shared: RPG · Space Sim · Space

Space Pirates And Zombies 2
Shared: Action · Space · RPG

Starfield
Shared: Space · RPG · Space Sim

Darkstar One
Shared: Action · Space · Space Sim

Objects in Space
Shared: Simulation · Action · RPG

Space Engineers
Shared: Simulation · Space · Space Sim

Hardspace: Shipbreaker
Shared: Simulation · Space · Space Sim