PC version Fans have made a PC version. Some are still early, so read the project page first.
Fans took Dragon Ball Z Budokai 3 HD Collection 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:
Recompilacion estatica (ReXGlue) de Dragon Ball Z: Budokai 3 HD Collection (Xbox 360) para Windows con launcher, sistema de mods y herramientas. No incluye datos del juego.