Games like Infinity: Battlescape
Games like Infinity: Battlescape include Elite Dangerous, Starbase, STAR WARS™: Squadrons, WARDOGS, and Starship EVO. We matched them by the tags players give Infinity: Battlescape on Steam (Simulation, Action, Space, Massively Multiplayer, and Indie): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space · Simulation · Space Sim

Starbase
Shared: Simulation · Massively Multiplayer · Space

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

WARDOGS
Shared: Action · Simulation · PvP

Starship EVO
Shared: Action · Simulation · Indie

SpaceCraft
Shared: Space · Massively Multiplayer · Sci-fi

EVE Online
Shared: Simulation · Space Sim · Space

Kerbal Space Program
Shared: Simulation · Space · Space Sim

Angels Fall First
Shared: Action · Indie · Simulation

Space Engineers
Shared: Space · Simulation · Indie

HELLDIVERS™ 2
Shared: Action · PvE · Space

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

Kinetic Void
Shared: Simulation · Space · Action

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

Starpoint Gemini 2
Shared: Simulation · Space · Action

War Thunder
Shared: Action · Simulation · Massively Multiplayer

Deliver Us The Moon
Shared: Action · Space · Indie

The Isle
Shared: Simulation · Massively Multiplayer · Action

Star Trek Online
Shared: Space · Massively Multiplayer · Sci-fi

X Rebirth
Shared: Simulation · Space · Action

Avorion
Shared: Space · Space Sim · Simulation

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

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

Between the Stars
Shared: Space · Action · Simulation