It doesn't seem as though anyone knows of the Su Doku handheld game sold at Wal-Mart? My mom got it for me for Christmas and I haven't put it down since. It's much easier than getting it in a newspaper or book. It has Beg. and Adv. Levels, 4 on each. On the Beg. levels, the numbers blink if you place them in the wrong spot, but on the Adv. they don't. It's pretty cool.