Games like Quantum Loop
Games like Quantum Loop include Outer Wilds, No Man's Sky, Starfield, Elite Dangerous, and Blue Prince. We matched them by the tags players give Quantum Loop on Steam (Space, Exploration, Sci-fi, Roguelite, and Mystery): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Space · Exploration · Mystery

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

Starfield
Shared: Space · Sci-fi · Exploration

Elite Dangerous
Shared: Space · Exploration · Sci-fi

Blue Prince
Shared: Exploration · Mystery · Roguelite

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

The Forgotten City
Shared: Exploration · Mystery · Time Travel

STAR WARS Jedi: Fallen Order™
Shared: Sci-fi · Exploration · Open World

FTL: Faster Than Light
Shared: Space · Sci-fi · Perma Death

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

The Invincible
Shared: Sci-fi · Space · Choices Matter

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

Void War
Shared: Space · Roguelite · Choices Matter

ASTRONEER
Shared: Space · Exploration · Open World

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

Endless Sky
Shared: Space · Sci-fi · Open World

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

EVE Online
Shared: Exploration · Space · Open World

The Swapper
Shared: Sci-fi · Space · Puzzle

Stellaris
Shared: Space · Sci-fi · Exploration

Jump Space
Shared: Space · Sci-fi · Roguelite

Rebel Galaxy
Shared: Space · Sci-fi · Open World

Firewatch
Shared: Mystery · Exploration · Adventure

The Witness
Shared: Exploration · Open World · Puzzle