Games like Starsim
Games like Starsim include No Man's Sky, FTL: Faster Than Light, Starfield, Space Rangers HD: A War Apart, and Rebel Galaxy. We matched them by the tags players give Starsim on Steam (Space, RPG, Sci-fi, Strategy, and Procedural Generation): closest matches first, and among equally close ones the better-known games.
No Man's Sky
Shared: Space · Sci-fi · Open World
FTL: Faster Than Light
Shared: Space · Sci-fi · Strategy
Starfield
Shared: Space · RPG · Sci-fi
Space Rangers HD: A War Apart
Shared: Space · RPG · Strategy
Rebel Galaxy
Shared: Space · Sci-fi · RPG
Endless Sky
Shared: Space · Sci-fi · Open World
Caves of Qud
Shared: Procedural Generation · Sci-fi · Open World
The Witcher 3: Wild Hunt — Remastered
Shared: RPG · Open World · Adventure
Fallout 4
Shared: RPG · Open World · Adventure
Stellaris
Shared: Space · Strategy · Sci-fi
Mount & Blade II: Bannerlord
Shared: RPG · Strategy · Open World
Space Pirates And Zombies 2
Shared: Space · Strategy · RPG
Starpoint Gemini Warlords
Shared: Space · RPG · Strategy
Cyberpunk 2077
Shared: RPG · Open World · Sci-fi
The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Strategy · Open World
Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space · Strategy
Elite Dangerous
Shared: Space · Sci-fi · Open World
Outer Wilds
Shared: Space · Adventure · Atmospheric
SPORE™ Galactic Adventures
Shared: Space · Adventure · Strategy
Space Pirates and Zombies
Shared: Space · Sci-fi · RPG
Between the Stars
Shared: Space · RPG · Strategy
Fallout: New Vegas
Shared: RPG · Open World · Singleplayer
Stoneshard
Shared: RPG · Strategy · Procedural Generation
觅长生
Shared: RPG · Strategy · Open World