
Mario Party 4 just got an unofficial native PC alpha, and that is a big moment for GameCube reverse-engineering projects.
This is still an early build, so expect bugs, missing features, and rough edges. It is not being sold as a final experience yet, but as a technical milestone that is now playable.
As with similar fan decomp/recomp projects, no original Nintendo assets are bundled. You need your own game data, and current compatibility is focused on the U.S. revisions (Rev 0 and Rev 1).