Games like SPORE™
Games like SPORE™ include Slime Rancher, SPORE™ Galactic Adventures, Kerbal Space Program, Elite Dangerous, and No Man's Sky. We matched them by the tags players give SPORE™ on Steam (God Game, Open World, Sandbox, Colony Sim, and Simulation): closest matches first, and among equally close ones the better-known games.
Slime Rancher
Shared: Open World · Exploration · Cute
SPORE™ Galactic Adventures
Shared: Simulation · Open World · Sandbox
Kerbal Space Program
Shared: Sandbox · Simulation · Space
Elite Dangerous
Shared: Open World · Space · Exploration
No Man's Sky
Shared: Open World · Space · Exploration
Kerbal Space Program 2
Shared: Sandbox · Space · Exploration
Universe Sandbox
Shared: Sandbox · Simulation · Space
SPORE™ Creepy & Cute Parts Pack
Shared: Open World · God Game · Simulation
X4: Foundations
Shared: Open World · Simulation · Space
Wobbly Life
Shared: Open World · Sandbox · Simulation
Goat Simulator
Shared: Open World · Simulation · Sandbox
SpaceEngine
Shared: Open World · Sandbox · Casual
The Universim
Shared: God Game · Colony Sim · Sandbox
Mount & Blade II: Bannerlord
Shared: Open World · Sandbox · Simulation
Stellaris
Shared: Space · Sandbox · Exploration
Goat Simulator 3
Shared: Sandbox · Open World · Exploration
RimWorld
Shared: Colony Sim · Sandbox · Simulation
Fallout 4
Shared: Open World · Exploration · RPG
Starfield
Shared: Open World · Space · Exploration
Totally Accurate Battle Simulator
Shared: Sandbox · Simulation · Funny
Oxygen Not Included
Shared: Colony Sim · Sandbox · Simulation
Space Haven
Shared: Colony Sim · Sandbox · Simulation
Space Engineers
Shared: Sandbox · Open World · Simulation
Starbound
Shared: Sandbox · Space · Open World