Well, we already knew that the Angry Birds Christmas edition was going to be free of charge, as an update to the Halloween edition, but we didn't realise just how free it would be.

Because, bird lovers, Angry Birds Seasons has launched to the Android Market in an ad-supported version that is yours for precisely £0 and 0p.

But it's bad news iOS fans, there's still no sign of the festive title in the App Store - at least not yet.

Angry Birds Seasons has 25 Christmas themed levels, complete with presents, snow and pigs in Santa hats, and there's also going to be "25 daily surprises for fans of Angry Birds to enjoy while counting down the days until Christmas".

If you haven't already got the Halloween version, then good news as this 45 level edition is included within the app.

You can get Angry Birds Seasons now from the Android Market and GetJar.

We'll keep our eyes peeled on the App Store for any iOS release news.

If you grab Angry Birds Festive, be sure to let us know what you think of the game? And also, give us some tips for the trickier levels.