That's a pretty amazing number, though it's not quite a surprise when you consider it. First of all, Nintendo DS and PSP publishing takes a much larger investment than Apple's $100 developer fee and an SDK download. Second, while the DS and the PSP are certainly selling a lot of games, they're not actually releasing nearly as many as the hundreds of thousands of apps on the App Store. Finally, new DS and PSP games sell for $30 or $40, while new App Store games sell much closer to 99 cents. So the fact that there are lots more people moving to the much more open and accessible platform isn't really that surprising.