I just love EA’s trickery.  You have to purchase the game for your phone in order to win, however they claim that no purchase is necessary.  Love the irony here.

Download the SimCity(TM) Deluxe mobile game to be automatically entered for a chance to win a $500 AMEX Gift Card and a copy of the SimCity(TM) Deluxe 4 Deluxe Edition PC game. Enter by August 17, 2010. No purchase necessary. Open to US residents 13 and older. See Official Rules for more details.

from AT&T