Newcomers dominated the box office this weekend as Lionsgate's comedy "Tyler Perry's Boo 2! A Madea Halloween" and Warner Bros.' sci-fi spectacle "Geostorm" debuted in the top two spots. Perry's sequel debuted in first place, raking in an estimated $21.6 million in the U.S. and Canada, according to figures from measurement firm ComScore. The PG-13 film, which reviewer Kimber Myers calls "the cinematic equivalent of getting Necco Wafers in your trick-or-treating bucket," follows the antics of Perry's popular character Madea who is tasked with protecting her grand-niece at a haunted campground. "Boo 2!" garnered mixed reviews from audiences and critics, earning an A- rating on CinemaScore and a dismal 8% "rotten" rating on Rotten Tomatoes. Warner Bros.' environmental disaster thriller "Geostorm" came in at No. 2, raining in $13.3 million in its first week.

It's been a great season for horror, with Blumhouse's "Happy Death Day" becoming the latest horror film to top the domestic box office in its opening weekend. The $5-million film, a bloody riff on the classic "Groundhog Day" concept, brought in an estimated $26.5 million in the U.S. and Canada, according to figures from measurement firm ComScore, above the $15 million to $20 million analysts projected. "We are absolutely thrilled with the opening," said Universal's Executive Vice President of Domestic Distribution Jim Orr. "Happy Death Day" marks Blumhouse's ninth film to open at No. 1 and its third to debut at No. 1 this year alone, following "Split" and "Get Out." The latest from producer Jason Blum and Universal Pictures, the film, about a woman who relives the day of her murder until she learns her killer's identity, earned a B rating on CinemaScore and a 64% "fresh" rating on Rotten Tomatoes.