https://github.com/HarbourMasters/SpaghettiKart/releases/tag/1.0.0

The Harbour Masters team recently released a big upgrade for SpaghettiKart, their Mario Kart 64 fan-made PC port with a bunch of new features.

Like other PC ports of retro Nintendo games, you need to supply your own copy of the game as they do not supply the assets to actually play the games. Which is how they hope to keep Nintendo lawyers away. With the 1.0.0 release there's a new harder CPU difficulty, improvements to the camera, a better custom track system, performance improvements and much more.