Games like Luft Gears
Games like Luft Gears include Stellaris, FTL: Faster Than Light, Elite Dangerous, No Man's Sky, and Cosmoteer: Starship Architect & Commander. We matched them by the tags players give Luft Gears on Steam (Space, Strategy, Sci-fi, Exploration, and Roguelike): closest matches first, and among equally close ones the better-known games.

Stellaris
Shared: Space · Strategy · Sci-fi

FTL: Faster Than Light
Shared: Space · Strategy · Roguelike

Elite Dangerous
Shared: Space · Exploration · Sci-fi

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

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

Dome Keeper
Shared: Sci-fi · Roguelike · Combat

X4: Foundations
Shared: Space · Exploration · Sci-fi

Star Trek: Voyager - Across the Unknown
Shared: Strategy · Roguelike · Management

Outer Wilds
Shared: Space · Exploration · Adventure

X Rebirth
Shared: Space · Sci-fi · Simulation

SPORE™ Galactic Adventures
Shared: Space · Exploration · Strategy

The Alters
Shared: Sci-fi · Strategy · Exploration

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

Heat Signature
Shared: Space · Strategy · Roguelike

The Long Journey Home
Shared: Strategy · Space · Exploration

Endless Sky
Shared: Space · Sci-fi · Adventure

Starfield
Shared: Space · Sci-fi · Exploration

Cosmonautica
Shared: Space · Strategy · Sci-fi

Shortest Trip to Earth
Shared: Space · Strategy · Sci-fi

Oxygen Not Included
Shared: Management · Strategy · Space

EVE Online
Shared: Exploration · Space · Adventure

Space Rangers HD: A War Apart
Shared: Space · Strategy · Sci-fi

Dyson Sphere Program
Shared: Space · Sci-fi · Management

Rebel Galaxy
Shared: Space · Sci-fi · Adventure