Instructions
Unlock Levels on iOS and Android Devices
Open the Angry Birds App, and go to the level select screen.
Tap any of the locked levels to display the level information, and then tap the "Home" button on your device to return to the device's home screen.
Double-tap the "Home" button to open the multitasking bar, and then hold the Angry Birds icon and press the "-" icon to close the app.
Open the Angry Birds app again, and when the title screen appears, tap the screen repeatedly to enter the locked level.
Complete the level to have it fully unlocked.
Unlock Levels in Google Chrome
Open Google Chrome, and go to chrome.angrybirds.com.
Start the game, and then copy and paste the following code into the browser address bar and press the "Enter" key:
javascript: var i = 0; while (i<=69) { localStorage.setItem('level_star_'+i,'3'); i++; } window.location.reload();
Choose any of the levels to play.