If you are looking for an official native PC experience rather than an older emulated title, several modern "Saga-based" games are available directly for Windows:
: You will need the game's ISO file (the disc image). While many sites offer "free downloads," the most reliable and legal way is to rip the file from your own physical copy. The Internet Archive also hosts a digital backup of the PS2 version for preservation. dragon-ball-z-sagas-free-download-pc-game-full-version
: An open-world action RPG that covers the entire Z series with modern graphics. It is available on Steam and the Bandai Namco Store . If you are looking for an official native