Free Angry Birds Theme for Windows 8. Enjoy this theme based on the popular desktop and mobile game, Angry Birds. The theme contains wallpapers of a few birds from the famous game and even includes two wallpapers of the green pigs. Get the most popular gaming theme for Windows 8. The wallpapers in the theme have a minimal design, giving it a modern look, just like Windows 8. The wallpapers used in this theme have a resolution of 1920 x 1080.