Massive sales for GTA IV

BioShock 2 a hit, as well

Sales of Grand Theft Auto IV have surpassed an incredible 15 million units, Take-Two confirm this week. The publisher also reveals that BioShock 2 has now sold 3 million copies.

The BioShock 2 total takes cumulative series sales to an impressive 7 million. GTA IV, meanwhile, has been out since early 2008 - with DLC released on the 360, said content en route to the PS3 this year.

"We've seen an impact on our BioShock back catalog as a result of BioShock 2," offered boss man Ben Feder, "and we are pleased with that."

More BioShock and GTA news as we get it.

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