Zoodoku: Doku Island

Welcome to Zoodoku: Doku Island—a cozy animal puzzle adventure where every colorful island hides a satisfying logic challenge.

Zoodoku combines Sudoku-style constraints with classic deduction puzzles. Instead of numbers, you’ll solve each board with adorable zoo animals. No math is required. Observe the colored territories, eliminate impossible spaces, and discover where every animal belongs. The rules are easy to learn and reward smart strategy.

HOW TO PLAY Every puzzle follows four simple rules: • Place exactly one animal in every row. • Place exactly one animal in every column. • Place exactly one animal in every colored region. • Animals cannot touch—not even diagonally.

Use crosses to mark impossible cells, narrow the possibilities, and place every animal correctly to complete the island.

SIMPLE RULES, DEEP LOGIC

Early puzzles help you learn naturally, while larger and more intricate boards test your observation, deduction, and planning.

EXPLORE DOKU ISLAND

Follow a structured level journey with increasingly challenging boards, or create a fresh Random Puzzle whenever you want a new brain teaser. Choose sizes from a quick 5×5 board to a demanding 12×12 challenge. Whether you have a few quiet minutes or want a longer logic workout, another puzzle is always waiting.

Your progress is saved automatically. Continue your adventure later, or replay completed levels to improve your best time and solve them in fewer moves.

COLLECT ADORABLE ANIMALS

Begin with the cat, dog, and rabbit, then unlock more charming friends—including the lion, panda, fox, koala, tiger, owl, and penguin. Choose your favorite animal style and give every puzzle more personality. Optional rewarded videos are available to unlock additional animals.

HELPFUL PUZZLE TOOLS

Zoodoku gives you useful tools while keeping the solution in your hands: • Undo moves when you change your mind. • Use optional hints when you need a gentle push. • Automatically mark cells blocked by placements. • Restart a puzzle and try a new strategy. • Track your completion time and move count. • Resume unfinished levels where you stopped.

Enable or disable hints and automatic crosses in Settings to choose between a guided experience and a tougher logic challenge.

RELAXING AND ACCESSIBLE

Escape into a playful island atmosphere with colorful territories, animated animals, gentle music, satisfying sound effects, and cheerful celebrations. Colorblind mode adds stronger region borders so puzzle areas are easier to distinguish. Music and sound effects can be adjusted independently.

PLAY ANYTIME

Core puzzles and progress are stored on your device, so you can continue solving offline. Enjoy Zoodoku as a quick daily brain exercise, a relaxing break, or a longer session that tests your concentration.

PLAYER-FRIENDLY ADS

Banner ads stay on menu screens and never cover the active puzzle board. Full-screen ads are limited to natural pauses after completed levels, while rewarded videos are optional and connected to animal unlocks.

WHY YOU’LL LOVE DOKU ISLAND • A fresh animal twist on Sudoku-style logic • Easy rules with thoughtful challenges • Progressive levels and random puzzles • Board sizes from 5×5 to 12×12 • Ten adorable animal styles to collect • Optional hints, undo, and automatic marking • Best-time and best-move tracking • Colorblind-friendly region borders • Relaxing music, animations, and sounds • Offline core puzzle play • No numbers or math—just observation and logic

Ready to explore the island?

Choose your favorite animal, study every territory, and discover how satisfying pure logic can be.

Download Zoodoku: Doku Island and begin your puzzle adventure today!