Ingot Factory Tycoon

You start with a patch of sand, one hopper and a stone furnace. Every ingot that leaves the furnace pays for the next machine, until the yard is too small and the whole operation moves somewhere hotter.

Build an ore factory pad by pad: droppers, belts, upgraders and furnaces on four plots, with rebirths, a daily sprint and earnings while you are away.

Tap a glowing pad, or its card under the plot, to build that part; it drops into place. Droppers put ore on the belt (tap a dropper for an extra ore), upgraders multiply its value as it passes, and the collector at the end of the line turns it into coins. Golden ore appears about once a minute: tap it for a payout worth twenty seconds of income. In the Quarry the furnace pays into a bin that you tap to bank, until you buy the cash tube. A full bin stops the lines until you tap it. In the Foundry the furnace pays up to double when hot: tap the bellows, or buy a blower to hold the heat. In Crystal Works crystals grow while they ride, and each line's dial trades belt speed for crystal size. In the Magma Forge the mixer pairs cobalt and ember ore into alloy bars, so both feed lines should run at the same rate. Rebirth resets the plot's parts for gears, each worth 25% more income for good, and each rebirth opens new parts. After three rebirths you can move to the next plot for blueprints; after the Magma Forge, founding a charter restarts the four plots with triple income and new parts. The factory earns at half speed while you are away, for up to two hours. The daily sprint gives everyone the same plot for four minutes; every coin counts toward the score, with 1,000 points for the day's coin goal. Hard mode raises every price 2.5 times, makes golden ore rarer and turns off offline earnings.