Like most puzzle games, the concept behind Angry Birds is a simple one which doesn’t really need a detailed backstory. Suffice to say, some evil (and for some reason, green) pigs have stolen the eggs belonging to a group of birds. This has understandably made the birds angry who have decided to channel their anger into a direct assault on the pigs who have barricaded themselves in and around various strongholds. It is then your job to launch the birds at the pigs using a large slingshot with the eventual aim of defeating them and reclaiming the treasured eggs. This is achieved either by direct contact, or by causing nearby structures to collapse onto them. Those pesky pigs have built some elaborate defenses though, so it won’t be easy!