Super Smash Bros. Ultimate was updated to Ver. 13.0.5, a small patch that fixes a bug involving invalid data from sent and received online battles. Nintendo pushed the update with only one stated gameplay fix, but it arrives with a warning for players who keep old replay files.
The reason the patch is drawing attention now is simple: it is the first new update for the game in over a year, following Version 13.0.4 in June 2025. That long gap makes even a minor release matter, especially when it touches online battle data, where a small fault can affect how matches are saved and handled.
The update itself is narrow in scope. Nintendo did not outline a long list of balance changes or new features. Instead, it focused on a single issue involving invalid data in online battles, which suggests the problem sat in the game’s handling of match information rather than in any larger gameplay system. For players, that means the patch is aimed at stability rather than at changing how Super Smash Bros. Ultimate plays.
What gives the release more weight is the replay notice attached to it. Nintendo warned that replays from Ver. 9.0.0 through Ver. 13.0.4 may run into compatibility issues after the update, while replays from Ver. 8.1.0 and earlier are not compatible at all. That creates a clear tradeoff for anyone who wants to keep a record of past matches: install the patch and risk losing replay access, or preserve those files first.
There is a way to avoid that loss. Players who want to keep their replay data can convert it into video before installing Ver. 13.0.5, using Vault, Replays and Replay Data. That step turns a fragile game file into something that can still be watched later, even if the replay itself no longer opens after the update.
The unresolved part is the bug itself. Nintendo fixed the invalid-data problem, but it did not spell out how the fault appeared in online battles or how many players it affected. For now, the practical advice is straightforward: the update closes a long-running gap in support, but anyone sitting on older replays should act before installing it.
