Here are the stats sent out by Microsoft on the performance of
Grand Theft Auto IV on the Xbox 360 and Xbox Live. The numbers provided are quite impressive, but this is Microsoft's internal take from retailer feedback on the sales figures. We probably wont know the true impact until both the April and May NPD numbers have been released.
-Xbox 360 consoles increased by 54% week-over-week
-Retailers are telling Microsoft that 60% of GTA sales are on the Xbox 360
-The game is being attached to new console sales at a 40% clip (retailer info)
-2.3 million people played GTA IV on Xbox Live in the first week
-GTA IV is the #1 game on live
-There were one million concurrent users on live over the weekend
-Over 12 million achievements for 100 million gamerscore points unlocked
-Set a record of four hour average time spent playing GTA IV on Live
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