Summary

Nintendo has issued a warning to players of Super Smash Bros. Ultimate regarding the use of Mii Fighters in online gameplay on the Switch 2, due to a critical bug that has been identified. This issue can lead to online matches crashing unexpectedly.

Key Points

• Players should refrain from using Mii Fighters during online matches until the bug is resolved.
• Additionally, the thumbnails for Mii Fighters may not save correctly, impacting player experience.
• Nintendo assures that the developers are working on a solution and an update will be released shortly.

As the Nintendo Switch 2 was launched on June 5, 2025, with a selection of nearly 30 games including Super Smash Bros. Ultimate, players continue to enjoy backwards compatibility with the original Switch games. However, this latest issue has raised concerns among players who utilize Mii Fighters, suggesting that the development team will continue to ensure the quality of gaming experience as they fix the glitches presented.

Stay tuned for updates as Nintendo commits to resolving these problems.