Perhaps not altogether surprising to see Angry Birds HD as the number 1 top grossing iPad gaming app of 2010 but you may be surprised at some of the others in the list, take a look at these… Angry Birds HD 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. Angry Birds features hours of gameplay, challenging physics-based castle demolition, and lots of replay value. Each of the 210 levels requires logic, skill, and brute force to crush the enemy. $4.99/Download…