Just a heads up, the code I got says it works worldwide, so hopefully my non North American friends can use the code.
Its, GXXX-XXXX-XXXX format.
"Now is the time to secure your beta key for UNCHARTED 3: Drake's Deception!
IGN Prime has beta keys available for all users WORLDWIDE who have a valid PlayStation Network Account. You won't want to miss this spectacular PlayStation 3 game. Join the beta today!"