Games like Last Horizon
Games like Last Horizon include No Man's Sky, Deliver Us The Moon, Cosmoteer: Starship Architect & Commander, Elite Dangerous, and EVERSPACE™. We matched them by the tags players give Last Horizon on Steam (Action, Indie, Exploration, Space, and Minimalist): closest matches first, and among equally close ones the better-known games.

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

Deliver Us The Moon
Shared: Indie · Action · Space

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

Elite Dangerous
Shared: Space · Exploration · Space Sim

EVERSPACE™
Shared: Action · Space · Indie

Outer Wilds
Shared: Exploration · Space · Indie

Breathedge
Shared: Space · Indie · Sci-fi

Starfield
Shared: Space · Exploration · Sci-fi

Endless Sky
Shared: Space · Sci-fi · Action

Rebel Galaxy
Shared: Space · Sci-fi · Action

Chorus
Shared: Action · Indie · Space

Starcom: Nexus
Shared: Space · Action · Exploration

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

3030 Deathwar Redux - A Space Odyssey
Shared: Indie · Action · Space

STAR WARS Jedi: Survivor™
Shared: Action · Sci-fi · Space

Starbound
Shared: Space · Survival · Exploration

Starcom: Unknown Space
Shared: Exploration · Space · Indie

Kerbal Space Program
Shared: Space · Indie · Space Sim

X Rebirth
Shared: Action · Space · Sci-fi

Terraria
Shared: Exploration · Survival · 2D

Hollow Knight
Shared: Indie · Exploration · 2D

Hollow Knight: Silksong
Shared: Indie · Exploration · 2D

Cyberhunt
Shared: Action · Indie · Arcade

Rain World
Shared: Exploration · Indie · Survival