Mars Colony - The Idle Builder

Contains adsIn-app purchases
Content rating
Teen
10K+
Downloads
Content rating
Teen
Mild Violence
In-Game Purchases
Learn more
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About this game

Welcome to Mars Colony - The Idle Builder!
Humanity has taken its biggest step - a permanent home on Mars.
Your mission: manage life, build habitats, and turn a lonely dome into a thriving colony.

**** Build & Expand ****
Set up extractors, plants, and solar stations to produce material, oxygen, water, and power.
Upgrade each system to boost efficiency and unlock new possibilities as your colony grows.

*** Deploy Colonists ***
Release colonists from the rocket and assign them to habitats.
Each one contributes to your income - but only if you keep them alive with enough water, oxygen, and energy.

*** Idle Automation ***
Your colony never sleeps!
Resources and income keep flowing, even when you’re offline.
Return to new profits, upgraded systems, and a stronger settlement.

*** Strategize for Survival ***
Power shortages stop income.
Oxygen or water shortages endanger your colonists.
Balance every resource and keep your colony stable to survive on the Red Planet.

Build, expand, and survive.
Prove that humanity can not only reach Mars - but thrive on it.
Play Mars Colony - The Idle Builder today!
Manage life, build, and expand your Mars colony - idle, smart & strategic game.
Updated on
Apr 2, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

- Improved navigation – swipe between buildings without closing dialogues
- Upgrade cost now visible – always see exactly how much you need to upgrade
- Smart Mars Idle Builder Colony
- Minor bugs fixes and performance improvements