Angry Birds Become 'Line Rangers'

Line Corp., owner of the call and messaging app "Line," has teamed up with Rovio Entertainment for an Angry Birds crossover within its tower defense game "Line Rangers."

The limited-time event launched Nov. 1 in North America and Europe and features Angry Birds characters as both the titular Rangers and game bosses.

In addition, all users who download "Line Rangers" between now and Nov. 16 will get a set of Angry Bird stickers.