Doku-Doku is a cool and stylish number placement puzzle. Fill each cell with numbers between 1 and 9 getting the hints from the 9x9 playing board. The same number can be placed only once in each column, row and a 3x3 region.
The game features a useful Memo and an easy-to-read Guide function that help enjoying a smooth gameplay.
More puzzles can be bought via in-app purchases.