PC versionN64 Fans have made a PC version. Some are still early, so read the project page first.
Fans took ClayFighter 64 apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here is the project we know about:
ClayFighter 64: native Linux and Windows fusion of ClayFighter 63⅓ gameplay and Sculptor's Cut characters, by djultra64