Cryptoku is a number puzzle game for the iPhone and iPod touch. It's a unique game with exciting game play. Numbers fall down from the top of the screen; catch them and place them in the grid to solve each level. Once landing in the grid, the numbers change color to indicate whether they're correct, one digit off, or wrong.
Like Sudoku, each number can only appear in the grid once... but unlike Sudoku, the numbers (and the grid itself) will try to foil you.
Play in Crypto mode, which is a longer game suitable for all skill levels. Or try your luck in a Hack game: sudden-death mode that starts tougher and can end much quicker!
Cryptoku is a fast-paced game that will challenge your logic skills!
More info on how to play Cryptoku.