Rovio’s purple balloons are now made from rock or concrete. They are so hard and resilient, that their resilience might now exceed the resilience of the birds themselves. Rovio’s purple balloons are stuck to the air as if they were held in place by 10-km-long anchor bolts fixed inside 100-km-r.c.piles held by Rovio’s crazy glue to the air. Nothing can budge them. They are simply immovable and the strongest element on the pigs’ side. They are made of rock.