Steam game

Planet Gemini

Planet Gemini is a factory-building and tower defense game. After crash-landing on two planets during an interdimensional journey, fend off waves of enemies and research a portal to survive.

Free May 21, 2026

By decidone

Windows
View on Steam
Planet Gemini - decidone. Popular. Released May 21, 2026
Screenshot of Planet Gemini gameplay showing in-action mechanics Screenshot 2 of Planet Gemini - additional gameplay view Screenshot 3 of Planet Gemini - more gameplay footage Screenshot 4 of Planet Gemini - final gameplay screenshot

Overview

About this game

Planet Gemini is a factory-building and tower defense game. After crash-landing on two planets during an interdimensional journey, fend off waves of enemies and research a portal to survive.

FEATURES

  • Two Planets: Teleport between two planets with different resources, and build bases to defend against enemies.

  • Co-Op: Managing two planets alone isn't easy. Team up with a friend in 2-player co-op and take on harder difficulties.

  • Factory Automation: Gather resources and unlock technology to build more efficient automated facilities.

  • Tower Defense: Build defensive lines with the resources you produce and protect your base.

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