Zoodoku is an online animal logic puzzle game that challenges players to place exactly one animal in every row, column, and colored region, while ensuring that no two animals touch—even diagonally. Rather than numbers or word clues, each puzzle is solved by combining board rules and eliminating impossible squares. The game offers a new daily set of five levels, with boards ranging from 5×5 to 7×7.

Players complete levels in order, and their current board, solve time, move count, and progress are saved in the browser so they can continue later. The board includes tools for marking unavailable squares, placing animals, undoing moves, restarting a puzzle, and revealing a valid next move with a hint. Zoodoku is designed for desktop and mobile play, with simple tap controls.

Its guidance also introduces strategies such as starting with smaller regions, checking row and column constraints, and remembering diagonal neighbors. Unlimited play, a daily archive, and a solver are described as planned features; the homepage currently offers the daily five-level set