Left 4 Dead Hits 2.5 Million Sold at Retail

Valve's cooperative zombie shooter Left 4 Dead has now sold over 2.5 million copies since its November debut, project lead Michael Booth revealed today. nope

The update came as part of Booth's GDC presentation on the game.

That tally includes both the PC and Xbox 360 releases, but does not include sales from Valve's digital distribution platform Steam. The company has a long-standing policy of not revealing Steam sales figures, though a recent discount saw sales jump 3000%.