Zoodoku: Animal Logic Puzzle

About Zoodoku: Animal Logic Puzzle

One board. One solution. Nothing left to chance.

Zoodoku is a logic puzzle you solve by elimination, not by luck. Every board is split into colored territories, and exactly one animal belongs in each. Animals never share a row or a column, and they never touch - not even at a corner. Three rules, four hundred boards, and exactly one correct answer on every single one of them.

THE CLIMB
Boards start at a gentle 5×5 and grow to a full 9×9. Easy and Medium fall to forced moves and careful crossing out. Hard makes you chain several deductions together before a single cell gives way. And then there are the fifteen Expert boards, where pure deduction runs out of road: finishing one means committing to a placement and proving it right. Clear a level inside par with every heart intact and you take all three stars - the hard part is never solving it, it is solving it cleanly.

HOW IT PLAYS
Tap a cell to place an animal. Tap again to leave a cross - crosses are your notes, and Auto-cross will mark the eliminated cells for you. Every puzzle starts with three hearts; a wrong animal costs one, and the hearts you finish with become your stars. Stuck? A hint does not just reveal a square, it tells you why: "Only cell left in this row."

WHAT IS INSIDE
• 400 levels across 10 habitats - Savanna, Jungle, Arctic, Wetlands, Rainforest, Grasslands, Canopy, Bamboo, Floodplain and the Tiger Den
• Boards from a gentle 5×5 up to a full 9×9, eighty of each size
• Four difficulty bands - Easy, Medium, Hard and fifteen Expert boards for the stubborn
• A new Daily puzzle every day, built from the date itself, with the board size rotating through the week
• Daily streaks, a calendar of the stars you have earned, and a home-screen widget for today's puzzle
• Stats worth reading: solves by size, solves by difficulty, best times, total play time
• Undo, self-explaining hints, and progress that saves itself when you step away
• Habitat ambience and soft sound effects, each with its own switch
• Share a clear - with a spoiler-safe option that hides the animals

MADE TO BE COMFORTABLE
Colorblind mode swaps in higher-contrast territory colors and gives every region its own pattern, so the board never depends on hue alone. Reduce motion turns off the non-essential animation. Every cell is announced to TalkBack with its row, column, territory and mark. Pick light, dark, follow-the-system or Material You on Android 12+ - the board's own colors stay exactly where they are. And on Android 13+ you can set Zoodoku's language independently of your phone's, from nineteen.

PLAY ANYWHERE
All 400 levels are inside the app and the Daily is generated on your device, so a flight, a tunnel or a dead zone changes nothing. No account. No sign-in.

ADS AND PURCHASES
A full-screen ad can appear on the win screen - never during a puzzle. One optional purchase removes those for good. Watching an ad for an extra heart or an extra hint is always your choice, never a requirement. Progress, settings and stats are kept on your device, and your privacy choices can be reviewed any time from Settings.

Animal habitats, quiet logic. Four hundred solutions are waiting - go take them.