Dig up what the ground gives you, belt it into the Hub, and build the machines that turn it into more. Nothing attacks you, nothing decays, and every level end is a good place to stop.
The whole game is this loop. Each level asks for a little more of something, and unlocks the machine that makes it.
Put an Extractor on a deposit. It mines forever and pushes items out of its coloured side.
Drag a line of belts anywhere. Items ride them across the map; splitters and tunnels come later.
The Hub asks for 20 wood and 20 stone, then plates, gears, motors. You supply, it grows.
Eleven levels and then freeplay with endless goals. A desktop with a mouse is the best way to play; phones work too.
Furnaces, sawmills, assemblers and fabricators, each eating what the last one made. Recipes you pick, or let the machine decide.
Give a delivery bot a short list of steps and it ferries cargo across the factory, no belt required.
Copy any part of your factory as a text code and paste it into a friend's game. Take a Photo or a ten-second clip of the whole thing.
One shared world a day, the same for everyone. Race to level five and compare times with friends.
One key colours every belt by how full it is and every machine by how busy. The bottleneck shows itself.
Nothing happens while you're away and there are no timers. The game saves itself; every level end says so.
The Cuprea Discord is where all of that lives. Ages 13 and up; the game never needs it. Bugs can also go straight from the game: Settings, then Bug report & comments, then Send report.
Yes. This web version is the full game as it exists today. If it ever comes to Steam, that version will be a paid download with extra content, and the web version stays free.
In this browser, on this device (browser storage). Clearing site data deletes it, and private windows forget it. Use Settings → Export (or Copy) to back it up, and Import to bring it back on another device. The game also keeps your last three autosaves under Settings → Restore a backup.
Yes. Profiles → Sync gives a profile a secret code and a link. Send the link to yourself and open it on the other device, and the same world appears there (or type the code under Link a synced profile). The game then saves to the cloud while you play and loads the newest copy when you come back. No account, no email, nothing personal: the link is the key, so keep it to yourself. Profiles without Sync never leave your device.
Yes. On an iPhone or iPad: Share → Add to Home Screen. On Android: the browser menu → Install app (or Add to Home screen). On a computer, Chrome and Edge show an install button in the address bar. It then opens like an app, full screen, and works without a connection. One thing to know on iPhone: the Home Screen copy keeps its own save (which Safari doesn't clear), so to bring a factory along, turn on Profiles → Sync in the browser first and use Link a synced profile in the app.
Yes, once one of your factories has finished level 5: Sandbox in the menu opens a world of its own where everything is unlocked and building is free, with an Item Source that makes any item. Blueprints you save there wait in your real factory.
Yes, with touch controls built for fingers: tap a tile to park a see-through ghost, tap it again to build. One finger pans, two fingers zoom. A desktop with a mouse is still the best way to play big factories.
Press 2 for the Extractor and drop it on a coloured deposit; its arrow shows where items come out. Press 1 for Belts and drag a line from the extractor into the Hub in the middle; R rotates. When the level panel fills up, pick the next goal or stop. The game saved already. The beginner's guide walks through every level, and the reference lists every building and recipe.
Not in this version. If one small ad ever appears beside the game on wide screens, it will be to help pay for hosting; it would never sit over the game, and the privacy page says what the ad provider could collect.
Open Settings → Bug report & comments inside the game, write what happened and press Send report; it reaches the developer directly, with optional anonymous play stats. You can also post it in the Discord (ages 13+).