ZooDoku

Zoodoku is a calm but clever logic puzzle for fans of Sudoku, crosswords, or the popular "Queens" puzzle — just with adorable zoo animals instead of numbers or symbols. THE GOAL Every level's grid is divided into coloured regions. Find exactly one animal in each row, each column, and each colour region — and make sure no two animals ever sit right next to each other, not even diagonally. HOW TO PLAY • Tap once: mark a cell as "definitely no animal here" • Drag across several cells: rule out multiple cells at once • Double-tap: place your best guess for that cell • Hint: shows you WHY an animal can't be in a certain area — real logic, not the answer handed to you • Reveal: places an animal outright when you're stuck ALWAYS A NEW CHALLENGE The grid grows with every level, from tidy 6x6 boards to tricky 10x10 puzzles. Each level features exactly one of 45 animal species, from lions and elephants to dolphins, octopuses, and polar bears. PROGRESS & REWARDS Earn points, build win streaks, and unlock new hints and reveals with every level you finish. Three hearts per level — one wrong guess costs a heart. BUILT FOR EVERY DEVICE Zoodoku runs natively on iPhone and iPad, supports both portrait and landscape on iPad, and plays entirely offline — no internet required, no ads, no waiting. Available in seven languages: English, German, Spanish, French, Italian, Dutch, and Portuguese.