Games like Masteroid
Games like Masteroid include SPORE™, Mountain, Universe Sandbox, Kerbal Space Program, and SpaceEngine. We matched them by the tags players give Masteroid on Steam (Casual, Simulation, and Space): closest matches first, and among equally close ones the better-known games.

SPORE™
Shared: Simulation · Casual · Space

Mountain
Shared: Simulation · Casual · Space

Universe Sandbox
Shared: Simulation · Space · Casual

Kerbal Space Program
Shared: Simulation · Space

SpaceEngine
Shared: Casual · Space · Simulation

PowerWash Simulator
Shared: Casual · Simulation

Universe Sandbox
Shared: Simulation · Space · Casual

Touhou Mystia's Izakaya
Shared: Casual · Simulation

Solar 2
Shared: Casual · Space · Simulation

X4: Foundations
Shared: Simulation · Space

Mini Motorways
Shared: Simulation · Casual

Empyrion - Galactic Survival
Shared: Simulation · Space

Space Engineers
Shared: Space · Simulation

BidKing
Shared: Casual · Simulation

Game Dev Tycoon
Shared: Simulation · Casual

Stellaris
Shared: Space · Simulation

Dyson Sphere Program
Shared: Space · Simulation · Casual

Elite Dangerous
Shared: Space · Simulation

Two Point Museum
Shared: Casual · Simulation

Goat Simulator
Shared: Simulation · Casual

Hardspace: Shipbreaker
Shared: Space · Simulation

PowerWash Simulator 2
Shared: Casual · Simulation

House Flipper
Shared: Simulation · Casual

Gas Station Simulator
Shared: Simulation · Casual