Dragon Ball Sparking Zero not only brings back the core gameplay elements of the 2000s Budokai Tenkaichi series, but also the ability to collect Dragon Balls to summon eternal dragons and unlock new features.
DRAGON BALL: Sparking! ZERO – How to Unlock Dragon Balls and Shenron Wishes (Full Gameplay)
The major difference between Dragon Ball Sparking Zero and the older games is that a new canonical dragon was introduced in Dragon Ball Super during the Universal Tournament arc. As for the Dragon Balls themselves, they're about as hard to find as any of Vegeta's branching arcs. If you're up for tracking down these wish-granting treasures, here's a breakdown of what you can get for summoning the Eternal Dragons.
Regular Dragon Balls are obtained by completing a set list of Zen-Oh's Orders or Whis' Tasks. These tasks really only require some skill with the game, but we've got a collection of Dragon Ball Sparking Zero tips and tricks to help you on your way.
Once you have the Dragon Balls, you can exchange them at the Come Forth screen to summon Shenron. Each time you summon him, you can ask him for one wish. So far, we've only found them via these tasks, but it is possible to summon the eternal dragon in other ways, so we'll update this guide as soon as we know more.