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Drag across empty cells to draw a rectangle. Each rectangle must hold exactly one number and cover exactly that many cells. When it is right, an animal pops up to claim it. Fill the whole board to finish the level.

No. Start on any empty cell. Numbers can sit anywhere inside their block, so you can drag from any corner. A selection can never cover an animal that is already placed.

Yes. Each of the 1,000 levels is checked by a solver before it ships and has exactly one solution, so there is never any guessing.

Tap the binoculars to use a hint: an animal moves into place for you. You start with three hints and earn another every 10 levels you clear. With none left, you can watch a short video for one. You can also send an animal back: poke it five times and it gets fed up and leaves.

You can watch a short video for three more hearts and keep the same board (up to twice per try), or restart the level.

Yes. Every level is inside the app and your progress is saved on your phone. You only need a connection for ads.

When you finish all 1,000 levels, you get a celebration and the choice to start over from level 1. Your hints and settings stay.

Progress is stored on the device, so it does not move to a new phone, and uninstalling the app removes it.

Yes. Every animal plays a real recording: a lion roar, an elephant trumpet, a frog croak and more. The recordings come from Wikimedia Commons, and their authors are credited in the app under Settings → Credits.

Yes. Open Settings and tap Sound or Vibration. You can also hide the number signs on placed animals with Block count.