Waddledoku app iconA penguin logic puzzle

Find a home for every penguin.

Place one penguin in each row, column, and colored region. Penguins can’t touch—not even diagonally.

Waddledoku puzzle screen on iPhone
Waddledoku penguin mascot gently waddling

How to play

Three rules. That’s all.

See how to play
  1. 01

    One per color

    Each colored region gets exactly one penguin.

  2. 02

    One per row and column

    Every row and every column gets exactly one.

  3. 03

    Penguins can’t touch

    Keep them apart, including on the diagonal.

Waddledoku home screen on iPhone
A colorful Waddledoku puzzle on iPhone

On the board

Tap once for an X. Twice for a penguin.

Mark the cells that can’t work, then place a penguin when you know where it belongs.

Stuck? A hint shows you what to check next. A reveal places one penguin for you.

Need the answer?

Official solutions are coming soon.

Soon, you’ll be able to look up a puzzle by ID and see the completed grid.

Go to solutions
Waddledoku app icon

Ready to play?

Find all the penguins.

Play Waddledoku on iPhone.