McDonald's is giving away Sony Playstation Portables as part of an instant-win game, according to Promo. To win you need to find a winning code on a Big Mac or fry box. After you buy your greasy burger and fries, you have to hop onto a website and enter the code from the boxes to see if you one a system or one of 50,000 smaller Playstation prizes.

The article says the contest starts this week, though I couldn't find any reference to it elsewhere, including the McDonald's site so take it with a super-sized grain of salt.

McDonald's, Sony Serve up Playstation with Big Mac [Promo, thanks PSP Rumors]

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