Kazuo (it's Sudoku!) (Japanese)

Another Japanese version of a demo for the Playstation Portable here, but it's fairly easy to figure out the menus and what is going on. The rules are simple: start with a grid consisting of nine three-by-three squares in which some of the numbers are already supplied. Fill in the blank squares so that each column, row, and three-by-three grid contains a number from 1 to 9 with none repeated. Download the demo using the link below and enjoy!