People take a selfie in front of an "Oppenheimer" movie poster before they attended an advance screening of "Barbie," on July 20, 2023, at AMC The Grove 14 theaters in Los Angeles. (PHOTO / AP)

LOS ANGELES - The much-hyped "Barbenheimer" box office battle over the weekend proved to be a win for movie theaters that needed to add some sizzle to their summer.

Ticket sales for the film industry's biggest season had been disappointing through much of June and July. The Flash flopped, a new Indiana Jones adventure underwhelmed, and Tom Cruise's latest Mission: Impossible movie opened short of expectations. Hollywood also is grappling with strikes by writers and actors.

Enter Barbie and Oppenheimer, two polar opposite movies that debuted simultaneously in a matchup dubbed "Barbenheimer."

Barbie stars Margot Robbie in a brightly colored comedy about the iconic doll, while Oppenheimer tells a haunting story about the making of the atomic bomb.

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The two titles had cinemas buzzing over the weekend and filled with Barbie fans dressed in pink. Domestic ticket sales for all movies topped $300 million in the United States and Canada for just the fourth time in history. Barbie hauled in $155 million of that and Oppenheimer collected $80.5 million, according to studio estimates on Sunday.

"Everybody was in," said Jeff Bock, senior box office analyst at Exhibitor Relations Co. "All demographics showed up for these two films, and it's exactly what Hollywood needed."

Banners for director Christopher Nolan's new film "Oppenheimer" are seen on the Chinese Theater on the Hollywood Walk of Fame on release day in Hollywood, California, on July 21, 2023. (PHOTO / AFP)

More than 200,000 people purchased tickets to see "Barbie" and "Oppenheimer" on the same day, according to the National Association of Theatre Owners

Cinema going still lags pre-pandemic levels, prompting nagging questions about whether audiences have grown content to watch movies at home.

Hopes were high going into the summer as COVID-clogged production pipelines cleared and studios scheduled 30 percent more films than last summer. But through mid-July, 2023 summer box office receipts were running about 7 percent below last year.

'Barbie' shines

Then, "Barbenheimer" became a cultural moment, sending crowds to AMC Entertainment, Cineplex and other cinema chains. More than 200,000 people purchased tickets to see Barbie and Oppenheimer on the same day, according to the National Association of Theatre Owners.

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Now, summer domestic ticket sales stand roughly 1 percent ahead of the same point in 2022, research firm Comscore said, while year-to-date totals are up 16 percent from 2022.

Still, the $5.4 billion total so far this year ranks 19 percent behind the pre-pandemic times of 2019.

A man's reflection appears walking past advertisements for the films "Oppenheimer" (from left) and "Barbie," on July 20, 2023, at the Landmark Theater in Los Angeles. (PHOTO / AP)

Over the weekend, Barbie set records as the biggest opening of 2023 and the highest of any movie directed by a woman in history. It eclipsed the April opening of The Super Mario Bros. Movie.

"I'm tickled pink at this historic weekend," gushed Jeff Goldstein, head of domestic theatrical distribution at Warner Bros, the studio that released Barbie. "People are having a great time. The conversation is so upbeat and so positive."

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Barbie maker Mattel Inc had launched an all-out global marketing blitz to stoke the frenzy, lighting London landmarks in pink and partnering on hundreds of products. Barbie took in $337 million worldwide.

Oppenheimer, from Comcast Corp's Universal Pictures, took in $174 million globally, a strong start for a three-hour adult drama. The film stars Cillian Murphy as scientist J. Robert Oppenheimer, the man who developed the atomic bomb that ended World War II.

"This feels like a (pre-COVID) weekend where a big Marvel movie or a Star Wars movie or a big Disney movie came out, but this didn't involve any of those things," said Box Office Pro senior analyst Shawn Robbins. "With the right content out there, people want to go see it on the big screen."

While Hollywood celebrated the bustling weekend, cinemas face a thinning slate ahead. The next big action movie on the schedule is November's Dune - Part 2.

READ MORE: Hollywood studios offer actors $1b in gains before strike

Plus, the ongoing work stoppages could delay some upcoming titles, and the industry still faces the reality that many 2023 movie releases fell flat.

"A lot of these blockbusters just didn't go over well," Bock said. "That's a problem for Hollywood because most of us expected the industry to blow away the summer of 2022."