Kraft Hello Joy

While the spinning wheel and random result display were straightforward, the participation mechanics involving serial numbers printed on products and specific rules were much more complex. It required securely querying an external database to verify the serial numbers' validity.

Additionally, there was a system for combining products from the same brand, a sweepstake, a participation form, and a portion of the winnings automatically donated to the Red Cross. A complex project that saw over 400,000 entries!