Current-gen PSN titles won't be able to work on the PlayStation 4, but Sony is looking to make them work "in some form."

The PlayStation 4 won't be able to play any of the PlayStation 3's PSN games, Sony has revealed.

This means gamers' current downloaded collections, which may include titles like Journey, The Unfinished Swan, and Wipeout HD, won't be playable on the PlayStation 4.

Sony Worldwide Studios president Shuhei Yoshida confirmed the news to Engadget after the PlayStation 4 was officially unveiled last night. It's because the PlayStation 4's new x86 architecture is radically different from the PlayStation 3's Power PC innards, according to Engadget's report.

Yoshida added that Sony was looking to make the current-generation PSN titles playable "in some form" in the future, with Engadget saying the PlayStation 4 will be able to emulate some current PSN titles--but only ones that don't "guzzle the latest console's power in emulation."

During its PlayStation 4 unveiling last night, Sony announced new entries in the Killzone and Infamous franchises, before unveiling new IP in the form of Drive Club and Knack. Media Molecule showed off a new sculpting prototype, Capcom unveiled its new title Deep Down (working title), and Square Enix promised to unveil a new Final Fantasy game at E3.

For more information on the PlayStation 4, check out GameSpot's previous coverage.

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