How we made Angry Birds

'It needed enemies fast - so I just drew this pig thing I've been drawing since I was 10'

Rovio only had enough money to make one game. It was 2009 and, as the company's sole designer, I had to start coming up with ideas. I've always been keen on drawing animals, so I sat at my computer and drew a bunch of birds, giving them beaks, a rounded shape - and angry eyebrows. I had this idea of an angry flock of birds, running around destroying things.