Angry Birds is an addictive bird-flinging casual game, which has now arrived on the Windows Phone 7 platform.

Your mission in this raucous game is to destroy all the green pigs by catapulting birds at them. This wouldn't be too difficult, except for the fact the hogs are holed up inside fortified castles which you need to smash into in order to enter. As the levels progress, these fortresses become ever more difficult to break down, so Angry Birds requires a bit of lateral thinking as well as a steady aim.

To fire a bird you simply pull back on the catapult, adjust the trajectory, then release your finger. You can shoot four birds per turn, and if you don't destroy every pig you'll have to start the level again. There are 165 levels across four worlds in the full version, so it'll be a long time before you get bored of Angry Birds.

As well as being great fun to play, Angry Birds looks the part too. Graphics are colorful and fun, and the bird noises and sound effects are hilarious. One of the few criticisms users might have with Angry Birds is that it's very repetitive. It would be nice if there were an option to customize levels or characters, for example.

The Windows Phone 7 version of Angry Birds boasts Xbox Live integration, allowing you to share your progress and achievements with your gaming buddies.

Angry Birds has become a mobile gaming classic, and it's as fun to play on Windows Phone 7 as it on any other platform. It does currently lack the same number of levels as other Angry Birds versions, though.