Erik Aston on 07 March 2007
There may be more accurate sources for individual territories, but nobody compiles more info from around the world in one place. If you want more than 3 or 4 numbers, VGcharts is easily, far and beyond, the best source.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.
