Rovio Entertainment Ltd has Angry Birds Seasons (iTunes Link) for the iPhone and iPod Touch and Angry Birds Seasons HD (iTunes Link) for the iPad in the iTunes App Store for FREE (regularly 99-cents/$2.99) for a limited time.

Rovio Entertainment Ltd also has Angry Birds Season for Android in Google Play Store for FREE.

Angry Birds Seasons is 5 years old! We’re celebrating with a spooky new episode, and a huge new update that makes Seasons totally free to download!

Join the Angry Birds as they celebrate unique seasonal events from around the world! Enjoy the addictive physics-based gameplay you love, but with an exciting twist. For the latest update, THEY CAME FROM OUTER SPACE – it’s Invasion of the Egg Snatchers!

LATEST EPISODE: Invasion of the Egg Snatchers
It’s all aliens, monsters, and mystery in 30 brand new levels of pig popping goodness peppered with plenty of campy B movie flair. Use the new Telebird to teleport through solid objects and pop those otherworldly piggies – wherever they may be hiding. Also, give the powerups a trial run in the power-up test range – just remember to wear eye protection.