I downloaded Angry Birds Go! this morning and it's exactly what I expected. It is a cart racer, which will draw comparisons to Nintendo's Mario Cart. Trouble is, at least for Nintendo, Mario Cart is not on the App Store. Matter of fact, Nintendo has zero apps on the App Store, opting for exclusivity to their Wii, Wii U, etc. platforms. I enjoy Angry Birds and the few minutes I've spent playing Go! have been fun. Early reviews seem to agree. With Rovio as an established brand in the App Store, expect this app to be number one by the end of the day. It seems as if Nintendo's opportunity to capitalize on the App Store is growing slimmer by the day. I get that they want exclusivity, but why not produce iOS versions. Would anyone think any less of them? If done right, it wouldn't dilute their brand. In fact, maybe it would have some game players seeking out more Nintendo games and that could result in game console purchases.