Mainspring

An idle tycoon set in a luxury watchmaker's workshop. Tap, prestige, ascend.

Wind. Tap. Prestige. Ascend.

Take charge of a master watchmaker's workshop and turn a single bench into a timeless empire. Hire apprentices, train craftsmen, install upgrades, and let the gears spin while you rest — then return to the chime of fresh coins.

Mainspring is a slow, rewarding idle tycoon for players who appreciate craftsmanship over chaos. No timer popups. No pay-to-win walls. Just a quiet workshop, a steady cadence, and the satisfaction of every milestone reached.

⚙ KEY FEATURES

• Idle production — your workshop runs while you're away. Offline earnings up to 12 hours with the Patient Hands upgrade.
• Tap to wind — every tap drops coins. Long-press the wind button to install permanent enhancements.
• Nine unique producers — from the Apprentice to the rarest masters, each with three escalating upgrade tiers and original lore quotes.
• Prestige system — reset your run for permanent Mainsprings, the prestige currency that boosts every future run.
• Prestige Workshop — five permanent upgrade lines (production, tap, ad rewards, starter coins, offline rate) unlock as you climb.
• Watchmaker's Hour — limited 3× production events you can summon by watching a rewarded ad.
• Daily Devotion — log in each day to grow your streak bonus up to ×2.5.
• Daily Quests — three rotating challenges every 24 hours.
• 20+ achievements tracking your craftsmanship.

✋ HOW IT PLAYS

Tap to wind the first spring. Buy your first Apprentice. Watch the cycle complete and the coins arrive. Reinvest. Hit a milestone — your workshop speeds up. Unlock the next producer. Reach a billion coins, prestige, and begin again with permanent boosts. Repeat. Master time.

🎩 WHY MAINSPRING

Most idle games are loud. Mainspring is built around restraint: a navy-and-gold aesthetic, lore quotes from imagined master watchmakers, and pacing that rewards patience over frantic tapping. Whether you have five minutes on the train or an hour at home, the workshop is waiting.

📱 BUILT FOR ANDROID

• Compose-native UI, smooth on every device
• Offline-first — no account or internet required to play
• Small install footprint
• Optional rewarded ads for bonuses (never required to progress)
• In-app purchases let you remove ads or accelerate progress

🔒 PRIVACY-FIRST

Your save lives only on your device. We do not collect personal data. Google AdMob (rewarded ads) and Google Play Billing (in-app purchases) are the only third-party services used. See our privacy policy for full details.

Wind the spring. Master the moment. Ascend the workshop.

— Mainspring