You pilot a saw-chain robot — two spinning gears tethered by a serrated chain — across scalloped grass islands floating over deep water. Anchor one gear, watch the other orbit at chain length, then tap-swap to fling yourself across treacherous gaps. Cut grass to meet each stage's quota, dodge stumps, boulders and crystals, time landings on moving platforms, then touch the flag to escape. Upgrade Sharper Saws, Longer Chain, Reinforced Frame, Coin Magnet and Tuned Gearbox. Finish 20 stages to enter the Hall of Fame as a MOW-A-HERO.