OFFICIAL UPDATEWhat the developer says changed
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LIVE PATCH HEALTH
Super Mario Bros. Wonder
Ver. 1.2.1
Apr 15, 2026 · Nintendo Support update tracked by Buffs & Bugs
SwitchSwitch 2
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PLAYER RESULTSWhat happened after players installed it
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Gathering reportsWhat this patch may affect on your system
Pulled from the official patch source. Platform-specific evidence appears only when that platform is explicitly named in the notes.
SwitchPlatform mentioned
Switch has specific information in the official patch notes.
Online
Official note“Skip Navigation My Support Dashboard Accounts & Purchases Nintendo Switch 2 Nintendo Switch Nintendo Switch Online Apps & Other Products Service Center Search Home Nintendo Switch How to Update Super Mario Bros.”
Other
Official note“Wonder Nintendo Switch, Nintendo Switch Lite, Nintendo Switch - OLED Model Follow these steps to update Super Mario Bros.”
Online
Switch 2Platform mentioned
Switch 2 has specific information in the official patch notes.
Online
Official note“Skip Navigation My Support Dashboard Accounts & Purchases Nintendo Switch 2 Nintendo Switch Nintendo Switch Online Apps & Other Products Service Center Search Home Nintendo Switch How to Update Super Mario Bros.”
Download / Install
Official note“The update will download and install automatically if the system is connected to the internet and the Software Auto-Updates setting is enabled on your Nintendo Switch 2 or Nintendo Switch console.”
OnlineDownload / Install
What officially changed
Latest update: Ver. 1.2.1 (Released April 15, 2026) The following updates have been made when playing the game on Nintendo Switch 2: General Adjustments and fixes have been made to the Nintendo Switch 2 Edition to improve the gameplay experience.
Read the full official notes ↗PLAYER REPORTS
What actually happened
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