Quest for the Playstation Vita
http://us.playstation.com/psvita
The hunt is on! Scour the web starting this Friday, April 6th, for hidden PlayStation®Vita app icons with special codes. Collect all codes across PlayStation® Online Communities, and you’ll be entered to win. We’re giving away one PS Vita System Uncharted Prize Pack every day for a week. The earlier you enter, the more chances you have to win!
The codes were 2, 25, and 30, now they seem to be 2, 25, 299. They’ll probably keep changing them.