DonutDoku vs Owldoku

Place one donut in every coloured area. No two may share a row or a column, and no two may touch - not even at a corner. That is the whole game, and it is enough to keep you thinking for months. SOLVABLE, NEVER GUESSABLE Every one of the 2,281 boards has exactly one answer, and every one can be reached by reasoning. We check that with our own solver before a board ships: if it cannot be finished without a guess, it does not go in. You will never be asked to flip a coin. A LADDER THAT ACTUALLY CLIMBS Boards start at 4x4 and grow to 10x10. Harder ones are not just bigger - about one in six needs a real deduction, where you assume a square and follow it to a contradiction. Those are marked "Hard" so you know what you are walking into, and they are spread through the ladder rather than saved up for the end. RACE A FRIEND Two phones, same board, no server and no account. One life and no hints - a single wrong donut ends it, so it rewards thinking rather than tapping fast. Works over Wi-Fi or Bluetooth, in the same room. A BOARD A DAY The Daily box gives every player the same puzzle, worked out from the date. No connection needed. MADE TO BE QUIET No ads. No accounts. No tracking. No internet connection of any kind. Nothing you do leaves your phone. It works in aeroplane mode, on the underground, anywhere. Fully playable in English, Hebrew and Spanish, right-to-left included.

A logic puzzle you solve by reasoning, never by guessing. Every board is a grid split into coloured regions. Place one owl in each colour, one in each row, one in each column — and no two owls may touch, not even diagonally. That is the whole rule set. What grows is not the rules but what you can deduce from them. 614 LEVELS, IN ORDER The levels run as one path from a 5×5 you will solve in a minute to 10×10 boards that ask for real technique. Each is checked to have exactly one answer, so a board is always solvable by reasoning alone. HINTS THAT TEACH Stuck boards are where a puzzle game loses people. Tap the hint and Owldoku dims the board to the squares the argument is about, outlines the row, column or colour under discussion, and says in one sentence why the move follows. Eight techniques, each introduced by a board built to need it. The hint shows its reasoning; you can close it and find the move yourself. BUILT TO BE READ • Colour-blind mode draws the region borders as outlines, not hues • Two themes, light and dark • Tap for a cross, double-tap for an owl, drag to rule out a run of squares • Correct owls lock in place, so a solved part of the board stays solved • Your progress saves itself, mid-board included PLAYS OFFLINE No account, no sign-in, no network needed to play. Optionally, you can send anonymous notes on where you got stuck, which is what we use to tune the difficulty curve — the game is identical whether you do or not, and you can change your mind in Settings at any time.