'Warm Bodies' heats up box office with $20 mil

(AP) The love-struck zombies of Warm Bodies swarmed the box office on Super Bowl weekend with a $20 million opening.

The Lionsgate PG-13 film easily led the box office, according to studio estimates Sunday. The weekend of the Super Bowl always means a significant slide in movie-going on Sunday, but Warm Bodies still lured many teenage fans.

The film is about a zombie whose love for a human redeems him. Lionsgate, which also released the Twilight saga, is calling it a rom-zom-com for its mix of humor, romance and the supernatural.

Action films continued to fare poorly in 2013, as Sylvester Stallone's Bullet to the Head opened with just $4.5 million.