Needle Rush

Somebody lost their needles in a haystack. A really, really big haystack. Grab a beeping metal detector and dig! The closer you get, the faster it beeps. Sell the hay, buy better tools and research Fork Arms, conveyor belts, magnet scanners, balers, vacuum towers and drones to build a hay factory that eats a 286,000-bundle haystack for you. Find golden and cursed needles, collect 48 odd needles for your album, level up your barn, hit milestones, claim daily rewards and come back to a factory that kept working while you were away.