Zoodoku: Sudoku’s No-Touch Animal Cousin

Field notes

The game serves five boards in sequence, unlocking each next level after completion. Its rules combine one-animal constraints for rows, columns, and colored regions with a separate no-touch condition, and the boards range from 5×5 to 7×7. The page says each date generates a shared set with a checked solution, while unlimited play, an archive, and a solver remain planned rather than visible as current modes. Browser storage preserves the player’s board, time, moves, and daily progress.