Games like Foreign Galaxies
Games like Foreign Galaxies include Elite Dangerous, No Man's Sky, Slime Rancher, Starfield, and Outer Wilds. We matched them by the tags players give Foreign Galaxies on Steam (Adventure, Simulation, Casual, Action-Adventure, and Space Sim): closest matches first, and among equally close ones the better-known games.

Elite Dangerous
Shared: Space Sim · Simulation · Exploration

No Man's Sky
Shared: Exploration · Adventure · Space

Slime Rancher
Shared: Adventure · Exploration · Simulation

Starfield
Shared: Exploration · Space · Action-Adventure

Outer Wilds
Shared: Adventure · Exploration · Space

Exo One
Shared: Adventure · Exploration · Atmospheric

EVE Online
Shared: Adventure · Space Sim · Exploration

Slime Rancher 2
Shared: Adventure · Simulation · Casual

Deliver Us The Moon
Shared: Adventure · Space · Atmospheric

DAVE THE DIVER
Shared: Adventure · Casual · Exploration

X4: Foundations
Shared: Simulation · Space Sim · Exploration

Internet Cafe Simulator 2
Shared: Simulation · Exploration · 3D

SpaceEngine
Shared: Casual · Space Sim · 3D

Kerbal Space Program
Shared: Simulation · Space Sim · Space

ABZU
Shared: Adventure · Exploration · Casual

The Long Dark
Shared: Adventure · Exploration · Atmospheric

Firewatch
Shared: Adventure · Atmospheric · Exploration

PEAK
Shared: Adventure · Exploration · First-Person

Disney Dreamlight Valley
Shared: Adventure · Simulation · Exploration

Chained Together
Shared: Adventure · Casual · Simulation

Prison Escape Simulator: Dig Out
Shared: Simulation · Casual · 3D

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · First-Person · Exploration

Journey
Shared: Adventure · Exploration · Atmospheric

Crime Scene Cleaner
Shared: Simulation · First-Person · Adventure