Ethan Crossfield 
PC players curious about a native way to run Super Smash Bros. Ultimate now have an early project to watch, but it is not a plug-and-play release. OpenSmash-Ultimate is an unofficial open-source effort that requires users to provide their own dumped game copy, and its biggest features are still under active development.
What has changed for Smash Ultimate on PC
OpenSmash-Ultimate has opened playtesting for a native Windows build of Super Smash Bros. Ultimate. The project supports game versions 13.0.4 and 13.0.5, using recompilation rather than conventional Switch emulation. It translates the game's AArch64 code into C, then compiles that work for Windows x64 systems. The team also recreates necessary Switch services and converts Nintendo's NVN graphics calls for Vulkan.
That technical approach means the game does not rely on a CPU interpreter or just-in-time recompilation while a match is running. According to the project details, complete matches have already reached 60 FPS. The current build includes controller remapping, resolution scaling, VSync options and local saves, giving early testers several practical settings usually expected from a PC release.
Who can use it and what remains unfinished
The project is aimed at players who already own Super Smash Bros. Ultimate and are comfortable with a work-in-progress PC build. OpenSmash-Ultimate does not distribute Nintendo game files, assets, encryption keys or firmware. Users must create the required build from their own dumped copy of the game.
Experimental online play is available, but it is not yet the headline feature competitive players may be looking for. The current implementation adapts Ultimate's Local Wireless functionality for LAN or internet use and remains delay-based. The developers are working toward rollback netcode, lower input latency and consistent 60 FPS performance in every mode. Those goals could matter significantly for serious local and online Smash communities, but they should be treated as planned improvements rather than current guarantees.
What to watch next before jumping in
OpenSmash-Ultimate could become more notable than a basic platform conversion if its modding plans develop as intended. Much of the game's fighter move scripting has reportedly already been converted into readable C++, potentially making gameplay changes and community tools easier to develop than on Nintendo hardware.
Its future is still uncertain. Super Smash Bros. Ultimate remains one of Nintendo's most important active games: it had sold 38.14 million copies by June 30, 2026, works on Switch 2 through backward compatibility and received an official update in September. Nintendo has also historically acted against projects that enable its games outside official hardware. The absence of copyrighted game data in OpenSmash's distribution does not necessarily shield it from legal pressure, making the project's longevity difficult to predict.
What players should know
- OpenSmash-Ultimate is an unofficial, open-source Windows project and is currently in playtesting.
- It supports Super Smash Bros. Ultimate versions 13.0.4 and 13.0.5.
- Players need their own dumped copy of the game; the project does not provide game content, keys or firmware.
- Full matches have been measured at 60 FPS, with resolution scaling, VSync, controller remapping and local saves available.
- Online functionality is experimental and delay-based, while rollback netcode is still a development goal.
- Nintendo's potential response remains the largest risk for anyone expecting a long-term community platform.
Expert View
OpenSmash-Ultimate is worth following for technically minded Smash players, particularly because native performance and deeper modding could eventually reshape how the game is played on PC. For most players, however, waiting is the sensible move: online play, input improvements and legal stability are not settled yet.
