As far as demos go, they are usually pack-ins with the system, a specified game or come with some pre-buy deals. They only Nintendo specific magazine is Nintendo Power and that magazine is pretty pathethic. Unless your 7 years old or interested in a bunch of 3 page "strategies" for some third rate game boy games, you wont like it. Nintendo should really think about making an alternate magazine for people like us who want a little more than a magazine full of coloring contests, and other nonsense. Also their whole review system is total crap. I've seen some totaly sh*t games get 4 or 5 stars across the board. its like they cant say anything bad about a game. I hate to bad mouth Nintendo, but Ninteno Power is VERY bad.