Steampunk Idle Spinner

Start with a single coin-producing machine and a cogwheel to spin, then reinvest everything into more gears, engines, pumps, hammers, and wagons until your workshop becomes a full steampunk contraption generating money even when the game is closed. Once the laboratory is complete, portals open to clockwork cities, flying islands, zeppelin fleets, windmills, and the gaslit fantasy worlds of Jules Verne and H.G. Wells. An idle builder that never stops expanding.