The annual Purge is being felt at the box office.

Universal's horror sequel "The Purge: Anarchy" was No. 1 with moviegoers on Friday night, scaring up a solid $13 million, but holdover "Dawn of the Planet of the Apes" may end up winning the weekend. 

"Anarchy" is expected to earn around $30 million for the weekend. So far, it's trailing its 2013 predecessor, with opened to $16.8 on its way to a $34.1 million opening weekend. However, "Anarchy" only cost around $9 million to produce and will have no problem turning a profit -- and no doubt spawning another sequel. 

Meanwhile, "Dawn" -- the sequel to 2011's hit "Rise of the Planet of the Apes" -- placed second on Friday, earning a strong $10.4 million. With Friday night out of the way, it will likely end up pulling ahead of "Purge" to win the weekend. So far, "Dawn" has earned an impressive $113.3 million domestically. 

There's some bad news for the weekend's other wide openers.

The Disney animated sequel "Planes: Fire and Rescue" didn't exactly soar at the box office, where it earned $6.2 million. It will likely fly away with $17 million or so for the weekend, significantly lower than the first film's $22 million debut. 

Likewise, the Sony comedy "Sex Tape," starring Cameron Diaz and Jason Segel, earned a disappointing $5.7 million for a fourth place finish. The poorly-reviewed film will be lucky to reach $15 million for the weekend. 

"Transformers: Age of Extinction" rounded out the top five, pulling in another $2.7 million, bringing its domestic total to $219.8 million. The Michael Bay-directed sequel -- starring Mark Wahlberg, Nicola Peltz, and Jack Reynor -- continues to be a monster at the international box office. So far, its global take stands at a huge $797.2 million. 

On the specialty side of the multiplex, Zach Braff's Kickstarter-funded "Wish I Was Here" is projected to pick up an OK $526,000 from 68 theaters. Richard Linklater's "Boyhood" expanded to 34 theaters  Friday, and is likely to gross a big $1.1 million for the weekend.

Dave Lewis has been a Los Angeles-based entertainment writer and editor for nearly ten years. Originally hailing from Minneapolis, he moved to L.A. in 1996 to attend USC, before working for various periodicals and web sites including a lengthy stint at He joined the HitFix staff in 2011.