Download 7scenes from the iPhone App Store or Android Marketplace, and sign-up for Twitter if you haven't already. Attend PICNIC events to collect trading cards through 7scenes.
Visit trading posts at lunch and coffee break locations. Trade cards with other AdHoc Architects to form winning card combinations.
Winning combinations create city structures. Tweet special city structure codes to share your successes. Ambitious architects can unlock mysterious city structures... Keep checking back here to watch the formation of our Urban Future!