These numbers come from Polyphony Digitals own website:
http://www.polyphony.co.jp/english/list.html
I assume these numbers include the digital downloads, since those are also sales for Polyphony. But that is only an assumption, since it isn't specifically mentioned on the site.
3
http://www.polyphony.co.jp/english/list.html
I assume these numbers include the digital downloads, since those are also sales for Polyphony. But that is only an assumption, since it isn't specifically mentioned on the site.