Angry Birds Theme for Flip Book Design - Version 1.0 Angry Birds is a strategy puzzle video game developed by Finnish computer game developer Rovio Entertainment. Inspired primarily by a sketch of stylized wingless birds, the game was first released for Apple's iOS in December 2009. Soon it hit its big, and a variety of versions based on different platforms are released, attracting tens millions of fans around the world.To help users quickly create pretty flip book, we pre-design this cute angry bird theme pack for Flip Creator software. With this theme, you can easily design angry bird style Flash flipbook and you can learn how to use it with the *.txt document which is called "how-to-install".