Games like Planetary Settlers
Games like Planetary Settlers include Kerbal Space Program, Outer Wilds, No Man's Sky, Kerbal Space Program 2, and Universe Sandbox. We matched them by the tags players give Planetary Settlers on Steam (Space, Education, Exploration, Science, and Adventure): closest matches first, and among equally close ones the better-known games.
Kerbal Space Program
Shared: Space · Science · Education
Outer Wilds
Shared: Space · Exploration · Adventure
No Man's Sky
Shared: Space · Exploration · Adventure
Kerbal Space Program 2
Shared: Space · Exploration · Science
Universe Sandbox
Shared: Space · Science · Education
Starfield
Shared: Space · Exploration · Sci-fi
COCOON
Shared: Exploration · Adventure · Indie
Stray
Shared: Adventure · Exploration · Robots
Deliver Us The Moon
Shared: Space · Adventure · Indie
SpaceEngine
Shared: Space · Sci-fi · Science
Elite Dangerous
Shared: Space · Exploration · Sci-fi
The Invincible
Shared: Adventure · Space · Robots
Take On Mars
Shared: Space · Exploration · Science
The Talos Principle
Shared: Puzzle · Exploration · Sci-fi
Moons of Madness
Shared: Space · Adventure · Exploration
Spaceflight Simulator
Shared: Space · Exploration · Science
Nimbatus - The Space Drone Constructor
Shared: Adventure · Exploration · Space
Mars Horizon
Shared: Space · Education · Science
Rodina
Shared: Space · Exploration · Indie
Cosmoteer: Starship Architect & Commander
Shared: Space · Sci-fi · Exploration
Solar Expanse - Space Exploration Manager
Shared: Space · Science · Indie
Universe Sandbox
Shared: Space · Education · Science
Stellaris
Shared: Space · Exploration · Sci-fi
Observation
Shared: Space · Adventure · Indie