To unlock the full game, you will need to activate it using the the serial code that can be found in the case.
When the game is launched for the first time, you will need to activate it. At the bottom you will see two options 'Redeem Code' and 'Activate Full Version', please choose this option.
In the next window, enter the key that is in your DVD case, once done, click 'Register'.
Please do not click the 'Redeem Code' option as this is for extras that can be purchased at the 'Rovio Shop', and it will not accept your code.
This document relates to:
ESS945: Angry Birds
ESS946: Angry Birds Rio
ESS1029: Angry Birds Star Wars II