Which Angry Birds game features characters from the Transformers franchise?

The Angry Birds game featuring characters from the Transformers franchise is Angry Birds Transformers.

Released in 2014, the game is a crossover developed by Rovio Entertainment in collaboration with Hasbro. It reimagines the familiar birds and pigs as Transformers-inspired characters: the birds form the Autobirds, while the pigs become the Deceptihogs. Characters include Optimus Prime, Bumblebee, and Arcee in bird-themed forms.

Unlike the original series' physics-based slingshot puzzles, Angry Birds Transformers is a side-scrolling run-and-gun game. Characters automatically move through levels while players shoot pigs, structures, and other targets. Each playable character has distinctive attacks and can transform into a vehicle during gameplay.

A common mix-up is Angry Birds Star Wars, another Rovio-Hasbro crossover that uses Star Wars characters and settings. Angry Birds Transformers was released first for iOS on October 15, 2014, followed by Android on October 30. The crossover also extended beyond the game through Hasbro merchandise, Telepod toys, and a four-issue comic-book miniseries.