PC versionSwitch Fans have made a PC version. Some are still early, so read the project page first.
Fans took Super Smash Bros. Ultimate apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here are the 2 projects we know about:
Experimental Windows x64 native porting toolkit for Super Smash Bros. Ultimate: static AArch64 recompilation, a D3D11 runtime, and Local Wireless relay netplay.
Static recompilation of Super Smash Bros. Ultimate 13.0.4 to a native Windows program: tools and runtime only, bring your own dump