There's a big thing in Japan right now where all sorts of professors from multiple universities are claiming that puzzles cure aging of the brain. As a result, Japanese toy manufacturers have started to produce lots of electronic puzzle games to reach some of the target groups that they can't hit with Pokemon and hentai. The "Kazzle? ", a nonsense word made up of kazu, which means number in Japanese and the word "puzzle," is a portable (4.7x 3.1x 0.6 inches) version of the famous ultimate logic puzzle "Number Place" or "Sudoku." It has eight levels and over a million ways to play. There are a similar ones like "Nanple (number + play) Master" from Epoch. Should cost about $30.- SKN

Product Page [Takara]