Angry Birds maker Rovio has issued an update to its Angry Birds Seasons game, adding a Haunted Hogs episode which brings out thirty new Halloween-themed levels. As the piggies get all dressed up for Halloween, there’s also a hilarious new Frankenswine character to get excited about. You’ll be playing at the haunted house, with the ghostly Halloween music helping you get in the right mood. And watch out for those ghost bricks that behave differently from regular blocks – use them for fun trick shots…

From iTunes release notes:

BOO! The pigs are hiding in their spookiest location yet: a haunted house! The Angry Birds will have to brave ghosts and ghouls to get their eggs back – if they can survive the house first! Are your eyes playing tricks on you or did that painting just move?!

This is a free updated to those who’d previously purchased the game.

Angry Birds Seasons is a 99-cent download for the iPhone and iPod touch. A high-definition version for iPads will set you back an additional three bucks.