It may not have charted in the January NPDs, but Uncharted 2 has stealthily beaten sales of the first game in the series, according to PlayStation's Jack Tretton. We can think of a number of reasons why: Certainly, the growing install base of the PS3 has something to do with franchise's growing success; and perhaps the addition of multiplayer makes Uncharted 2 a more attractive purchase than the first game; or maybe it's simply because it's pretty darn good.

Uncharted 2 sales are "now closing in on three million copies sold worldwide," according to Tretton. Considering those figures, it's clear that Sony management should have one directive for developer Naughty Dog: "Make another one, please!"

This article was originally published on Joystiq.

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