Global sales for PS3 version are most probably over 2x US total, we know that this game has sold over 8.5 million copies worldwide and 4.2 million copies in US, we also know X360 is strongest in US, I assume similar sales levels in rest of world between PS3 and X360, so I am estimating PS3 version at around 3.5 million copies sold within first 5 weeks.
I think with stable sales of PS3 in Europe and NA, this game will continue to sell for a long time, previous GTA games are still selling many years after release on PS2 and PSP.
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Global sales for PS3 version are most probably over 2x US total, we know that this game has sold over 8.5 million copies worldwide and 4.2 million copies in US, we also know X360 is strongest in US, I assume similar sales levels in rest of world between PS3 and X360, so I am estimating PS3 version at around 3.5 million copies sold within first 5 weeks.
I think with stable sales of PS3 in Europe and NA, this game will continue to sell for a long time, previous GTA games are still selling many years after release on PS2 and PSP.