65%Strong matchCaptain of Industry
90%12k90% positive reviews, Very Positive across 12k reviews·Automation · Resource Management
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You start with a coal mine, an iron mine, a well, and a farm. You end with rockets flying, colonies on the Moon and Mars, and cargo flowing between every world you've built. An idle incremental game about building humanity's space program from the ground up.
Heliodawn
SteamDay one: a coal mine, an iron mine, a well, a farm. That's it. Earth is modern but empty of space infrastructure, and the only way forward is to build it yourself.
Mine coal to make power. Smelt iron into steel. Refine oil into rocket fuel. Process air into oxygen and nitrogen. Grow the supply chain until you've got electronics, composites, and a rocket assembly plant. Then you launch.
Low orbit is a station, not a home — a staging point you use to reach the Moon. The Moon has polar ice and regolith and no atmosphere. Mars has thin air full of CO2 and enough water locked in the ground to run a Sabatier reactor and brew your own methane. Each world is a new economy you have to rebuild for the environment you're in.
Transport ties it all together. Ships run fixed loops between worlds — Earth to orbit to the Moon, Earth to Mars, Moon to Mars — hauling whatever cargo you tell them to haul. You pick the stops. You pick the cargo. You scale the fleet. A single screen shows every line in your network at a glance, green where it's flowing and red where it's stalled.
No lose state. Close the game for a week and your colonies are still there, making things, waiting.
The gameplay is logistics, production, and network-building — not piloting or physics. The systems below are what ships today.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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