DuckDoku: Queens Logic Puzzle

Every row, every column and every colored region hides one little duck. Can you find them all?

DuckDoku is a number-free logic puzzle based on the classic Star Battle, also known as Queens. It blends Sudoku-style elimination with Minesweeper-style deduction. Learn the rules in seconds: every puzzle has exactly one solution, and you can always reach it by logic alone. No guessing required.

SIMPLE RULES, DEEP THINKING
• One duck per color: the board is split into colored regions, and each region holds exactly one duck
• One per line: every row and every column also holds exactly one duck
• Personal space: ducks don't like crowds, so no two can touch, not even diagonally
• Three hearts: double-tap to place a duck. A wrong move costs a heart, and you get three per puzzle, so guessing won't get you far

A REAL JOURNEY
Travel with the ducks through 18 themed worlds, including Seasons, Solar System, Oceans, Zodiac, Into the Deep and Chess Pieces: 183 chapters and 9,940 verified puzzles in all. Boards grow from cozy 5×5 grids to brain-bending 12×12 ones, the challenge builds step by step, and every theme you finish ends with its own celebration.

SOMETHING NEW EVERY DAY
• Duck Break: a fresh set of puzzles every day, for when you just want to unwind
• Daily Challenge: one big 12×12 puzzle a day; your first clear of the day earns 20 fish

PLAY AT YOUR OWN PACE
• No ads, no interruptions
• No time limits
• Play offline anywhere, on your commute or while you wait
• Hints when you're stuck, and Auto-X to skip repetitive marking
• Pinch to zoom on large boards
• Separate switches for music, sound effects and haptics

YOUR PROGRESS IS SAFE
• Game Center cloud saves, so you can pick up on another device
• Leaderboards and achievements
• Available in English, Simplified Chinese, Traditional Chinese, Japanese and Korean

Love Sudoku, Nonograms, Minesweeper, Queens or any puzzle that makes you think? DuckDoku brings along a flock of cute ducks for that satisfying moment when the logic finally clicks.

The Full Version is a one-time purchase that unlocks every Journey level and all future themes. No ads. No subscriptions.

Set off now and bring every hidden duck home!