Overview
- Super Mario Bros. Wonder now sits at version 1.2.1 on Switch 2 after a small update published on April 15, 2026.
- The patch targets only the Switch 2 Edition of the game, with no changes for the original Nintendo Switch release.
- Nintendo’s brief notes say the update makes unspecified “adjustments and fixes” to improve the gameplay experience.
- This follows the late‑March Switch 2 Edition launch and an earlier 1.2.0 patch that tweaked in‑game elements and added a new language option.
- Around the same time, Nintendo’s GameCube – Nintendo Classics app received a minor update.