Here are descriptions of Angry Birds for Windows Phone:
"Angry Birds is coming to Windows Phone! The survival of the angry birds is at stake. Dish out revenge on the green pigs who stole the birds’ eggs. Use the unique destructive powers of the angry birds to lay waste to the pigs’ fortified castles. Each of the 165 levels requires logic, skill and brute force to crush the enemy."
Some comments said that Angry Birds for Windows Phone is not as smooth as Angry Birds on the iOS version. Another deficiency is touch response when moving the angle of the birds is a little off.
Microsoft fixes the price of Angry Birds for Windows Phone with $2.99 with 240 levels while the Angry Birds for IOS just for 99cents. There may be advantages and disadvantages of the two versions of the Angry Birds given the price difference, so please you choose according to your taste.
Follow this link to the Marketplace for Angry Birds Windows Version