A huge mass of this list is due to the obvious factor of the casual market's decline. Other more core series have held or have only had small declines, which is nice to see. Some of the games on this list aren't necessarily veteran sellers that always do better than the last, as well. Take Zelda for example, there are ups and downs in the series not just downs.
Anyhow, it's interesting to see, although much of the list I already predicted before even clicking on the thread. It's nice to see the list paired with an actual percentage decrease, though. That's handy.







