Games like Across the Galaxy: Stellar Dominator
Games like Across the Galaxy: Stellar Dominator include FTL: Faster Than Light, Cosmoteer: Starship Architect & Commander, No Man's Sky, Stellaris, and Space Pirates and Zombies. We matched them by the tags players give Across the Galaxy: Stellar Dominator on Steam (Strategy, Shoot 'Em Up, Procedural Generation, Exploration, and Combat): closest matches first, and among equally close ones the better-known games.

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

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

No Man's Sky
Shared: Exploration · Space · Procedural Generation

Stellaris
Shared: Strategy · Space · Exploration

Space Pirates and Zombies
Shared: Strategy · Space · Indie

Star Saviors
Shared: Shoot 'Em Up · Indie · Strategy

Reassembly
Shared: Strategy · Space · Indie

Dome Keeper
Shared: Combat · Sci-fi · Singleplayer

Deep Rock Galactic
Shared: Procedural Generation · Exploration · Shooter

Heat Signature
Shared: Strategy · Space · Indie

STAR WARS™ Battlefront™ II
Shared: Space · Shooter · Sci-fi

X4: Foundations
Shared: Space · Exploration · Strategy

The Long Journey Home
Shared: Strategy · Exploration · Indie

V: Rings of Saturn
Shared: Space · Exploration · Sci-fi

Kerbal Space Program
Shared: Space · Indie · Exploration

Elite Dangerous
Shared: Exploration · Space · Sci-fi

Crying Suns
Shared: Strategy · Space · Indie

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · 2D

ENDLESS Space™ - Definitive Edition
Shared: Strategy · Space · Sci-fi

Starfield
Shared: Space · Exploration · Sci-fi

Starcom: Unknown Space
Shared: Exploration · Space · Sci-fi

ShellShock Live
Shared: Strategy · 2D · Shooter

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · Space · Sci-fi

Outer Wilds
Shared: Exploration · Space · Indie