There are 2 quick hacks for this game. 1 for you to access to all levels, including the special Chrome level. Another 1 is for you to set all levels locked.
In the talk Rovio did at Google IO, they mentioned they were using HTML5′s LocalStorage. If you open up Web Inspector in chrome, you’ll see they are keeping track of your score and stars with localstorage. Lucky for us, that means we can use setItem() set all 70 levels to 3 and get access to them all.
To unlock all levels:
To lock all the levels: