How do you get dragon balls in Dragon Ball Z budokai tenkaichi?
To get Dragon Balls you have to play story mode( I'm not sure if vs. mode works) and some times you can break a building, the dragon balls are hidden in there, so you get the dragon balls automatically.
There aren't specific locations you have a 26% chance of getting them in a tournament. And a 89% chance of getting them in dragon history. And in any dragon history place, too. You can even do the same place over again and get another Dragon Ball. Just break all the things until a Dragon Ball is by the health bars.