I think in articles talking about the new direction of the Uncharted movie >8.5 million was mentioned.
I would hope that Naught Dog would come out with a celebration of 10 million shipped (physical) + sold (digital), since it will be the first UC game to ever break that barrier. That announcement hasn't happened (but maybe will at E3) and I reckon UC4 must have sold about 1 million digital at least. So I'm a bit sceptical of 9 million physical for now.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
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