Games like Your Spaceport!
Games like Your Spaceport! include Big Ambitions, Game Dev Tycoon, Prison Architect, Terraria, and Bloons TD 6. We matched them by the tags players give Your Spaceport! on Steam (Time Management, Sandbox, Economy, Tower Defense, and Capitalism): closest matches first, and among equally close ones the better-known games.

Big Ambitions
Shared: Economy · Sandbox · Capitalism

Game Dev Tycoon
Shared: Economy · Strategy · Indie

Prison Architect
Shared: Sandbox · Strategy · Economy

Terraria
Shared: Sandbox · 2D · Pixel Graphics

Bloons TD 6
Shared: Tower Defense · Strategy · Sandbox

X4: Foundations
Shared: Sandbox · Space Sim · Economy

Software Inc.
Shared: Economy · Sandbox · Capitalism

Reassembly
Shared: Sandbox · Strategy · 2D

News Tower
Shared: Sandbox · Strategy · Economy

Starminer
Shared: Sandbox · Economy · Space Sim

Startup Company
Shared: Economy · Sandbox · Strategy

Cities: Skylines
Shared: Sandbox · Economy · Strategy

X3: Terran Conflict
Shared: Sandbox · Space Sim · Strategy

X Rebirth
Shared: Sandbox · Space Sim · Economy

Cookie Clicker
Shared: Economy · Indie · Casual

Project Highrise
Shared: Sandbox · Strategy · Economy

Kerbal Space Program
Shared: Sandbox · Space Sim · Space

Avorion
Shared: Sandbox · Space Sim · Space

Mad Games Tycoon 2
Shared: Economy · Strategy · Capitalism

Turmoil
Shared: Time Management · Strategy · Economy

The Escapists
Shared: Strategy · 2D · Indie

Jurassic World Evolution
Shared: Sandbox · Strategy · Economy

Starbound
Shared: Sandbox · Space · Pixel Graphics

Mad Games Tycoon
Shared: Economy · Strategy · Sandbox