Games like Space Rangers: Quest
Games like Space Rangers: Quest include Starfield, STAR WARS™ Knights of the Old Republic™, Space Rangers HD: A War Apart, Rebel Galaxy, and Mass Effect (2007). We matched them by the tags players give Space Rangers: Quest on Steam (Adventure, RPG, Space, Sci-fi, and Text-Based): closest matches first, and among equally close ones the better-known games.

Starfield
Shared: Space · RPG · Sci-fi

STAR WARS™ Knights of the Old Republic™
Shared: RPG · Sci-fi · Adventure

Space Rangers HD: A War Apart
Shared: RPG · Space · Adventure

Rebel Galaxy
Shared: Space · RPG · Sci-fi

Mass Effect (2007)
Shared: RPG · Sci-fi · Space

Star Trek Online
Shared: Sci-fi · Space · RPG

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

STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™
Shared: RPG · Sci-fi · Adventure

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

Mass Effect™ Legendary Edition
Shared: RPG · Sci-fi · Space

Endless Sky
Shared: Space · Sci-fi · Adventure

Aliya: Timelink
Shared: RPG · Space · Sci-fi

Elite Dangerous
Shared: Space · Sci-fi · Adventure

Warhammer 40,000: Space Marine 2
Shared: Adventure · Sci-fi · RPG

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

The Expanse: A Telltale Series
Shared: Adventure · RPG · Sci-fi

LEGO® Star Wars™: The Skywalker Saga
Shared: Adventure · Space · Sci-fi

Citizen Sleeper
Shared: RPG · Sci-fi · Text-Based

Fallout 4
Shared: RPG · Adventure · Sci-fi

Outer Wilds
Shared: Space · Adventure · Sci-fi

Warhammer 40,000: Inquisitor - Martyr
Shared: RPG · Adventure · Space

Between the Stars
Shared: RPG · Space · Adventure

The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Adventure

Fallout: New Vegas
Shared: RPG · Adventure · Sci-fi