If you've managed to snatch a cool Google+ invite from a friend - or a total stranger - you can once again fling some miffed birdies at a selection of green swine.

Yes, Rovio has added its popular physics game Angry Birds to Google's new Facebook-esque social network, and it comes packing seven secret levels that aren't available in the mobile offerings.

We've already shown you how to unlock all seven Angry Birds Google+ Chrome levels, but now you need to play them and bag yourself three stars on each.

Seasoned players will know this is never easy, but luckily these videos will guide you to success.

Thanks as always to AngryBirdsNest.

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