Tenkaichi is ALMOST everything you wanted in a dbz game
Tenkaichi is a pretty good story, it plays through the saiyen saga to the end of buu, straight through. But you can also unlock battle gates to let you play through some of dbgt's battles as well, and there are also some pretty strange changes through the other battlegates.
Tenkaichi supplies 10x bigger battlegrounds,
awesome graphics,
and best of all- fast gameplay.
Although it might take a minute at most to take on an opponent, you feel like its been ab out 5 because your moving so fast during the game.
This helps keep it seem like a big story mode that will take you a while.
Despite a few faults, tenkaichi is by far the best dbz game ( definatly not best fighting game though, let me tell you ). If you like dbz and have some time on your hands, buy this game, its pretty sweet.
This game is also got really cool multiplayer, so if u have a friend then check it out.