Angry Birds is a video game franchise created by Finnish computer game developer Rovio Entertainment. Inspired primarily by a sketch of stylized wingless birds, the first game was first released for Apple's iOS in December 2009. Angry Birds has been praised for its successful combination of addictive gameplay, comical style, and low price. Its popularity led to versions of Angry Birds being created for personal computers and gaming consoles, a market for merchandise featuring its characters and even long-term plans for a feature film or television series. The Postcrossing Stamp is published by Finnish Postal Services.