Super Mario Galaxy Movie Box Office: Can It Stay 2026’s #1?

Last updated: July 2026  ·  8 min read

The Super Mario Galaxy Movie has already done something rare. After opening to a record $372 million globally in April 2026, it became the first film of the year to cross $1 billion and, through mid-year, the highest-grossing release of 2026 by a margin of more than $100 million. The question now is not how big its opening was — it is whether that lead survives a crowded end of the year.

Two late-2026 tentpoles stand between the Mushroom Kingdom and a year-end crown, and betting markets already favour one of them to finish first. This article treats the “biggest film of 2026” title as a live forecast: what Mario has banked, what is coming, and the scenarios that decide who ends the year on top.

What Mario has already banked

The film’s strength was front-loaded and durable. A $372 million global opening set a record, and rather than collapsing afterward, it held well enough to reach $1 billion by its tenth weekend — a sign of strong repeat and family viewing rather than a single opening spike. Produced by Illumination and Nintendo and distributed by Universal, it converted the enormous audience of the 2023 Mario film into a second, larger hit.

One nuance complicates the picture. Unlike its predecessor, the Galaxy film drew mixed-to-negative reviews from critics even as audiences responded positively, and it moved to Peacock streaming relatively early in its run. Neither has stopped its theatrical total from leading the year, but both are reminders that commercial dominance and critical consensus can diverge.

The challengers — and why timing matters

The two films most likely to overtake Mario both arrive late. Spider-Man: Brand New Day is the betting favourite to finish as 2026’s highest-grossing film — one set of odds puts it near a 74% chance — largely because it has more of the calendar left to accumulate revenue. Avengers: Doomsday, opening in mid-December, is a longer shot at roughly 15% precisely because it has only about two weeks inside 2026 to build a total, even if its lifetime gross ends up enormous.

That is the quiet lesson of the race: for a single calendar year, release date can matter as much as raw appeal. A December blockbuster can out-earn a spring hit over its full run yet still lose the annual title simply because the year ends first. Mario’s advantage is that it has been earning since April.

The main threat to Mario’s crown is the December blockbuster — see our forecast on whether Avengers: Doomsday can reach $1 billion. For why a 74% figure is a probability rather than a promise, read our guide on reading prediction market probabilities.