Moles pop up from nine holes. Tap a mole before it ducks back down. A round lasts 30 seconds. Keys 1 to 9 also work, one key for each hole.
Hit 5 moles in a row to raise your score multiplier, up to x5. A miss, or a mole that gets away, sets it back to x1. The gold mole is worth 3 points and adds 1 second. Do not tap the bomb: it costs you 3 seconds. The moles get faster every 10 hits.