For all the Dragon Ball fighting games out there, it's always nice to see something different being offered. It may not be nothing mind-blowing, but the game was actually good. Dragon Ball Z fans will be treated to lots of nostalgia, as the Anime is well-represented in this RPG. If the developers wish to make future RPGs based on the other sagas, then they got a nice system to work with.
Some more modern RPG mechanics would be great if they do decide to look into it. Overall, Dragon Ball Z: Attack of the Saiyans is a decent RPG offering for Nintendo DS, and is something different that DBZ fans can enjoy.