Games like Redout: Space Assault
Games like Redout: Space Assault include Elite Dangerous, Kerbal Space Program, KovaaK's, Deliver Us The Moon, and Chorus. We matched them by the tags players give Redout: Space Assault on Steam (Simulation, Indie, Action, Space, and Sci-fi): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space · Simulation · Space Sim

Kerbal Space Program
Shared: Simulation · Space · Indie

KovaaK's
Shared: Simulation · Action · Indie

Deliver Us The Moon
Shared: Indie · Action · Space

Chorus
Shared: Action · Indie · Space

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

EVERSPACE™
Shared: Space · Action · Indie

STAR WARS™ Battlefront™ II
Shared: Space · Singleplayer · Action

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

Angels Fall First
Shared: Action · Indie · Simulation

Project Wingman
Shared: Action · Indie · Singleplayer

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

Rebel Galaxy
Shared: Space · Sci-fi · Simulation

Starpoint Gemini 2
Shared: Simulation · Space · Sci-fi

X Rebirth
Shared: Simulation · Space · Action

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

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

Between the Stars
Shared: Simulation · Space · Action

Kinetic Void
Shared: Simulation · Indie · Space

Endless Sky
Shared: Space · Simulation · Sci-fi

Trailmakers
Shared: Space · Action · Singleplayer

Dead Space (2008)
Shared: Action · Sci-fi · Space

Strike Suit Infinity
Shared: Indie · Action · Space

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