Apple took a nice slice of the market-share pie -- and as you'll notice in the picture above, we're seeing the same trend this time around. According to data from Flurry and NPD Group, iOS and Android are earning a sizable chunk of the revenue in the portable gaming software sphere, with the Nintendo DS's dominant market share dropping from 70 percent in 2009 to just 57 percent in 2010 to accommodate the newcomers. We may be seeing the decrease in relative revenue because the PSP and DS are on the way out to make room for the NGP and 3DS -- however, this chart speaks only of the current-gen portables. But hey, it's easy for almost anyone to spend a single buck on a full-fledged game, right? Head past the break for some more videogame revenue stats, if you please.