After the break is the promo that aired, and features the Angry Birds code, which is a level reference (0:27 - If you didn't figure it out, we'll show you how you can unlock the secret level on Angry Birds.)
To unlock the bonus level, just follow these instructions.
- Go To Level 13-12
- Waste The First Yellow Bird. (you don't need it)
- Launch The White Bird Backwards
- Drop The Egg on the small ledge behind the catapult.
- Exit The Level.
- In Golden Eggs, on the second page you should see a golden football.
Once you complete the level, you're redirected to a site so you can enter the 'Rio' sweepstakes, to possibly win a trip to Rio de Janeiro, to see the world premiere of the film. (Unfortunately, if you're outside the U.S. you will be redirected to the 'Angry Birds Rio' app trailer.)