Those enraged birdies are celebrating Halloween for the second time, with a new all-new spooky update for Angry Birds Seasons on iOS.
Along with 30 new "bone-chilling" levels, there's a new Orange Bird to unlock. Your latest miffed avian starts out pretty scrawny, but inflates into a massive balloon when you tap your device's screen. This makes him perfect for destroying the pigs' defences from inside.
As always, Rovio has added a batch of new Game Center achievements to the mix. You'll earn these by defeating 300 skeletons, finishing all 30 levels, grabbing three stars on each stage, and completing other similar tasks.
Angry Birds Seasons will set you back 69p / 99c [buy] on iPhone and £1.49 / $1.99 [buy] on iPad.
Check out the new screenshots in our gallery above and see the new Orange Bird in action below.