Although Wedbush Morgan analyst, Michael Pachter, predicts PS2 will become somewhat irrelevant in 2009, he doesn't discount the combined strength of the PlayStation brand. He remains optimistic for the entire PlayStation family as he expects "software sales for Sony consoles to account for 31% of all game software sold worldwide."

Pachter indicated in Wedbush's annual Interactive Industry Report that, while the numbers have been dwindling for PS2, overall worldwide software sales for PS3 titles have more than doubled within the last year. In 2008, 62.4 million units of PS3 software titles have been sold -- a huge step up from the 29.6 million units sold in 2007. The momentum of this growth will carry into 2009, according to Pachter, who believes PS3 and PSP titles (the latter of which only saw a 15% increase in worldwide sales last year) will pick up PS2's slack.

PS3 titles will be the top sellers, despite the fact that Pachter predicts Sony won't "secure significant third party exclusivity" as it continues "to focus its internal development efforts on blockbuster games." It's interesting to note, in light of another report, this strategy hasn't really worked out for Sony.

This article was originally published on Joystiq.

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