Details: What launched with a slingshot has taken over the world as the immensely popular app Angry Birds and has turned all-encompassing brand. Those cute-but-fierce wingless wonders are everywhere in TV shows, games and more. Now add to the addictive fun with this larger-than-your-phone, smaller-than-your-tablet mini calendar. Sixteen months (Sep 2013'Dec 2014).
Angry Birds is a puzzle video game developed by Finland-based Rovio Mobile in which players use a slingshot to launch birds at pigs stationed on or within various structures, with the intent of destroying all the pigs on the playfield. Inspired primarily by a sketch of stylized wingless birds, the game was first released for Apple's iOS in December 2009. Since that time, over 12 million copies of the game have been purchased from Apple's App Store, which has prompted the company to design versions for other touchscreen-based smartphones, such as those using the Android operating system, among others. Rovio Mobile has supported Angry Birds with numerous free updates that add additional game content, and the company has even released stand-alone holiday versions of the game.