Games like Forsaken Portals
Games like Forsaken Portals include No Man's Sky, FTL: Faster Than Light, Elite Dangerous, Starfield, and Stellaris. We matched them by the tags players give Forsaken Portals on Steam (Space, Adventure, Card Battler, Top-Down, and Sci-fi): closest matches first, and among equally close ones the better-known games.

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

FTL: Faster Than Light
Shared: Space · Sci-fi · Strategy

Elite Dangerous
Shared: Space · Sci-fi · Space Sim

Starfield
Shared: Space · Sci-fi · Adventure

Stellaris
Shared: Space · Sci-fi · Strategy

Rebel Galaxy
Shared: Space · Sci-fi · Adventure

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

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

Breathedge
Shared: Space · Open World Survival Craft · Sci-fi

Outer Wilds
Shared: Space · Adventure · Sci-fi

ASTRONEER
Shared: Space · Open World Survival Craft · Adventure

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

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

X Rebirth
Shared: Space · Sci-fi · Space Sim

Hardspace: Shipbreaker
Shared: Space · Sci-fi · Simulation

Empyrion - Galactic Survival
Shared: Space · Open World Survival Craft · Simulation

Endless Sky
Shared: Space · Sci-fi · Adventure

EVE Online
Shared: Adventure · Space · Space Sim

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

Kerbal Space Program
Shared: Space · Space Sim · Simulation

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

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

Sid Meier's Civilization®: Beyond Earth™
Shared: Space · Sci-fi · Strategy

Heat Signature
Shared: Space · Top-Down · Sci-fi