ATMOFORGE
From scrap to starlight.
Crash-land on a frozen asteroid with nothing but a cutting torch. Mine ice, light the Atmogen, and grow a breathing colony across six asteroids, until you launch the Ark.
The game
Atmoforge is an idle game with hands. You start by walking, mining and salvaging yourself. Every resource is gathered by hand before a machine can take over, and every machine you place stays on the rock, humming, venting steam and glowing at night.
Every asteroid has an Atmogen that burns ice to hold a breathable dome. The dome decides where you can build, its air drives your crewed machines, and expanding it through five levels reveals the rest of the rock.
Step outside and your suit tank starts to drain. Every trip into the open is a timed dive.
Ice shards, wreckage of the lost First Expedition, regolith and lichen: you harvest them yourself first. Then you build harvesters, smelters and power, and the factory takes over while you explore further out.
A guide beacon and short goal chains teach one idea at a time.
Instead of copying the same building a hundred times, you improve the ones you have: Mk I to Mk IV tiers plus Overclock, Efficiency, Quality and Power Saver modules on every building. Match all brings the rest of a type up to your best one in a tap.
Close the tab and your colony keeps working for up to 8 hours (more with research), Atmogens included. No energy timers, no forced ads, no paywalled content.
Play as a guest or make a free account to keep your colony safe in the cloud and pick it up on any device.
The journey
Each age bridges you to a new rock with new resources, new machines and a new Atmogen to light. First Ark launch: around 8 to 10 hours of play, spread over a few days.
Cradle
The icy rock your escape pod slammed into. Scrap, ice and stubbornness.
Verdigris
Copper-streaked hills, green with oxidised metal. Melt the rock. Pour the metal.
Ironheart
The rusty core of a shattered planetoid. Steam, steel and the hum of machines.
Glasswake
Pale silicate plains around a frozen lake. Wire the belt. Light up the dark.
Emberfall
A volcanic rock that never cooled down. Split the atom. Tame the furnace.
Starfall
Something fell here long ago. It still glows. Forge stars. Leave the belt behind.
Screenshots
Every image here is a real in-game capture: no paint-overs, no mock-ups.
Community
Atmoforge is young and growing every week. Here's where the colony stands, what's coming next, and how to tell the crew what you think.
The game has a new name and a home at atmoforge.app, along with this website, a new logo and a press kit.
Free accounts: your progress saves to the cloud and follows you to any device. The server keeps 40 earlier versions of every colony, so an accidental restart can always be undone from Settings → Backups.
Your astronaut now has a personal air tank. It refills inside breathable domes and drains in open space. Run dry and the suit beacon hauls you home.
The first prototype was set on floating islands. It moved to an asteroid belt, gained the Atmogen and its domes, and per-building upgrades replaced endless copies.
Recorded sound and a soundtrack for each age, shooting stars and passing freighters, meteor showers that drop supply crates, drones ferrying goods around the colony.
Achievements and stats, Star Charts (permanent upgrades from Ark launches), dome breaches to patch and ice comets to catch, auto-upgrade toggles.
Languages, accessibility (colour-blind status icons, text scaling), then Android and iOS apps and a Steam release.
FAQ
Yes. The whole game is free to play in your browser. Any extras we add later are optional and never lock away content: everything can be earned by playing.
No. You can play as a guest and your progress is saved in that browser. A free account backs your colony up to the cloud so you can continue on another device, and it keeps 40 earlier versions in case something goes wrong.
Any modern browser with WebGL 2: phones, tablets, laptops and desktops. On touch screens you drag to walk and tap to interact; on a computer use WASD or click-and-hold.
Your colony keeps producing for up to 8 hours (research extends that), and the Atmogens keep burning ice, so leave them stocked. When you come back you'll see what was made.
Reaching the Stellar Age and launching your first Ark takes around 8 to 10 hours of play, usually spread over several days. After that you can start a New Expedition with a permanent +50% production bonus for every launch.
Yes. There's no chat and no violence. A username account needs no email or other personal information, and each person on a shared computer gets their own save slot.
Usually, yes. Open Settings → Backups in the game: there are snapshots on your device and, if you have an account, up to 40 versions in the cloud. If that doesn't help, send us a message with your username.