Not Worth Buying
First off the story is decent enough as it follows the story of the anime show while bringing in some of the movies. It just gets boring after a while and you are walking around doing nothing. The fighting is repetitive and the controls are weak. Energy attacks barely do any damage and it takes like 5 punches to kill a normal human being. Turing into super saiyan gives the gameplay improvement as it makes the player walk faster than 2 miles per hour and the attacks are much stronger though you can only stay this for a minute tops.
Overall this game can be alright as you can choose different characters but leveling up and doing missions is just boring and lacks depth. It will probly be cheap now so if you are into dragonball z you might as well buy it but dont if you arent.