Doku! vs DuckDoku

Every colored region on the board hides one dot. The symbols on each tile tell you where a dot cannot go. Tap a square to pencil a note on it. Tap it twice to put a dot down. THE DAILY One board a day, the same board for everybody. Solve it and your streak goes up. The last seven days sit on the front page, so you can see which ones you got clean. THE JOURNEY 300 levels across 21 chapters, from a 4x4 that teaches you one rule at a time to the 9x9 boards at the end. Three chances per level. Solve one in the fewest moves it can be done in and it is marked perfect. ALSO IN IT - Palettes for deutan, protan and tritan color vision - A letter on every region for when the colors are hard to tell apart - Daily and journey leaderboards through Game Center - Every puzzle ships inside the app - No account and no sign up

One duck in every row, column, and colored region. No two ducks can touch—not even diagonally. DuckDoku is a cozy, number-free brain puzzle inspired by Sudoku, Queens, and spatial deduction. The rules take seconds to learn, but every board rewards careful thinking. Each puzzle has one logical solution, so you can solve it without guessing. A COLORFUL PUZZLE JOURNEY Travel with Quacky through charming themed worlds filled with increasingly satisfying challenges. Begin with friendly 5×5 boards, sharpen your deduction skills, and work your way up to demanding 12×12 puzzles. WHY YOU’LL LOVE DuckDoku • Thousands of carefully validated logic puzzles • Colorful themes with chapters, progression, and star ratings • Board sizes from beginner-friendly 5×5 to challenging 12×12 • Pure logical deduction—no guessing required • Helpful hints and Auto-X when you need a nudge • Pinch to zoom on larger boards • No time limits and no ads • Play offline anytime • Game Center cloud saves and leaderboards • Achievements to discover and unlock • Available in English, Chinese, Japanese, and Korean Whether you have a quiet minute or time for a longer puzzle session, DuckDoku offers a relaxing challenge at your own pace. Can you find the one perfect place for every duck? DAILY CHALLENGE A new free 12×12 puzzle every day. Complete it for the first time that day to earn 20 fish. The puzzle refreshes worldwide at 00:00 UTC. The first 270 Journey levels are free. A one-time Full Version purchase unlocks the rest of the journey. No ads or subscriptions.