Captain America: Brave New World is declining rapidly at the box office, even during a muted winter weekend with hardly any competition.

After strong $100 mil start over the extended Presidents Day holiday frame, Disney and Marvel’s “Captain America: Brave New World” crumbed by 68% in its second weekend with $28.3 million from 4,105 American theaters.

The Anthony Mackie-led superhero adventure, which remained in first place on box office charts, has generated $141 million domestically and $289.4 worldwide to date.

“Captain America” cost north of $180 million before marketing, making the production budget slightly less expensive than other Marvel tentpoles.

It’s not uncommon for comic book tentpoles on the scale of “Captain America” to slide so much. Yet this film, saddled with negative reviews and poor word-of-mouth, fell on the steeper side with a drop closer to 2023’s “Ant-Man and the Wasp Quantumania” (down 70% after a $106 million debut) than “Guardians of the Galaxy Vol. 3” (down 47% after a $118 million debut). “Doctor Strange in the Multiverse of Madness” and “Thor: Love and Thunder” also saw similar declines of 67% in their respective sophomore outings — however those 2022 films had much bigger debuts. “Guardians 3” endured at the box office, while “Ant Man 3” became one of the few Marvel movies that failed to cross the $500 million mark globally and didn’t break even in its theatrical run.

Should “Captain America” follow suit with “Quantumania” rather than “Guardians Vol. 3,” it’ll be concerning for Disney, whose once impenetrable MCU has shown concerning signs of wear and tear in the post-“Avengers: Endgame” era. It’s also a potential problem for movie theater owners because there’s nothing resembling a four-quadrant blockbuster on the calendar until Disney’s “Snow White” remake on March 21.

The Monkey

Second place went to Neon’s gory thriller The Monkey, which generated $14.2 million from 3,200 theaters in its opening weekend. This marks the second biggest debut for Neon following last July’s “Longlegs” ($22.4 million), both of which were directed by Osgood Perkins.

“The Monkey” is adapted from Stephen King’s 1980s short story about a cursed toy that causes people to suffer random and horrific deaths. Audiences saddled “The Monkey” with a “C+” on CinemaScore.  Starring Theo James (“The White Lotus”) and Tatiana Maslany (“Orphan Black”) and produced by James Wan (“Saw,” “The Conjuring”), “The Monkey” carries a $10 million budget.

Lionsgate’s The Unbreakable Boy stumbled in eighth place with $2.5 million from 1,687 venues. Zachary Levi stars in the faith-based film as father of son who is on the autism spectrum and has brittle bone disease. Audiences were more receptive than critics; “The Unbreakable Boy” holds an “A” grade on CinemaScore and 48% average on Rotten Tomatoes.

Universal and DreamWorks Animation’s canine crime adventure “Dog Man” remained at No. 4 with $5.9 million from 3,179 venues. The kid-friendly film, which dipped 40% from the weekend prior, has amassed $78.7 million domestically and $104 million globally, against a budget of $40 million.

Ne Zha 2: Chinese Animation

Chinese-language animated film “Ne Zha 2” opened with $3 million from 800 theaters in its second weekend. The movie’s domestic tally of $14.7 million is impressive for foreign language film, but it’s nothing compared to the business the sequel is doing in China. “Ne Zha 2” has become runaway smash there with $1.7 billion and counting, overtaking “Inside Out 2” ($1.66 billion globally) as the biggest animated film in history and eighth-highest grossing release of all time.