The love-struck zombies of “Warm Bodies” swarmed the box office over Super Bowl weekend with a $20 million opening.

The film easily led the box office, according to studio estimates yesterday.

The top three films were rounded out by “Hansel and Gretel: Witch Hunters” and “Silver Linings Playbook.”

With action flicks faring poorly, Sylvester Stallone’s “Bullet to the Head” opened with just $4.5 million, finishing sixth.