Pick up every passenger. One line.

A calm logic puzzle for iPhone, iPad and Android. Lay one railway track over every tile, reach the stations in order, and every animal waiting on the platform hops aboard.

Route 1

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Aboard 0/7 Track 0/25

  1. Start at station 1 and drag the track from tile to tile.

  2. Reach the stations in order. Each passenger hops into a wagon.

  3. Cover every tile and finish at the last station. Then the train rides the whole route.

Three ways to ride

Every puzzle has exactly one solution, and you can always reach it with logic alone. No guessing.

600 routes and counting

Thirty chapters that grow from small 4×4 boards to 9×9 routes with fences and odd shapes. New chapters will keep arriving in updates.

Daily ride

A new route every day. Ride it daily to keep your streak going.

Endless

Fresh puzzles made on your device, one after another, from Medium up to Expert.

Meet the passengers

Ten animals, each in four colours. Every station on a route has someone new waiting on the platform.

    Tap a passenger to try another colour.

    Play it your way

    • Day and night

      Follows your system setting, or pick one. At night the train switches on its lights.

    • Hints and undo

      Stuck on a route? A hint lays the next tile for you, and undo takes back any move.

    • Plays offline

      No connection needed. Your progress is saved on your device.

    • iCloud sync

      Carry on where you stopped, on your iPhone or your iPad.

    • Game Center

      Leaderboards for the daily ride and 20 achievements to unlock.

    • Easy on everyone

      Colour-blind-safe colours, VoiceOver labels and full support for Reduce Motion.

    The first train leaves soon

    Choodoku is coming to iPhone, iPad and Android.