Short answer: The Super Mario Galaxy Movie is slated to release in theaters on April 3, 2026 in the United States, with a broader rollout planned around that time. Details

• Release date: The current plan is April 3, 2026 for the United States, with other markets following close to that timeline.

• Format and regions: The film is positioned as a major theatrical release from Illumination and Nintendo, distributed by Universal Pictures, with simultaneous or near-simultaneous releases in multiple regions and formats (including RealD 3D and IMAX in some markets).

• Cast and production: The film builds on the momentum from The Super Mario Bros. Movie (2023) and continues with an executive team from Illumination and Nintendo, including involvement from Shigeru Miyamoto; additional casting updates have been shared in official and partner channels.

• Trailers and hype: An official trailer released in late 2025 confirms the April 2026 window and upcoming marketing pushes across major platforms.

What this means for you

• If you’re planning a trip to the cinema to see a Nintendo-inspired blockbuster, pencil in early April 2026 or later in your region for the strongest likelihood of a wide release.
• If you want the latest, most precise regional dates or format availability (IMAX, 3D), I can look up localized release calendars as that information becomes available.

Sources: official announcements and coverage indicate a spring 2026 release with April 3, 2026 as the US date, and related marketing materials confirming the window.