Summary: The game functions properly, but its absolutely frustrating. the controls are very basic and feel behind. The camera isn't far enough away from your character to be able to dodge all the random objects flying out of nowhere or the random ninjas that just materialized and sprinted into you for no reason. There are so many boulders and other crap its just annoying. The sound is the absolute worst part.
Summary: When first playing this game I was impressed with the extras it offered. You can choose from a wide variety of characters, each with thier own unique skills and fighting style, and the audio and graphics aren't too bad either. The only majoy dissapointment I had with the game is entirely mini games. You can unlock cool abilities for each character and it can take a little stratagy to think of how or which character to use for each mission that you choose.
Summary: I'm a big Naruto fan, so I bought this when it was on sale. If you aren't a fan, don't bother. If you are a fan, pick it up when it hits the $10-15 range. The combat is pretty simple and gets old. The fun comes from collecting and playing as such a large group of characters. If you're favorite is missing...than your favorite is either too new or too obscure ;) In my opinion, the best Naruto game to be released in the US so far has been Ultimate Ninja 3 on the PS2.
Summary: Okay, first of all, this has no storyline. It's all about ranking up. You start off as a low-ranking ninja doing easy D-ranked missions and end as a Jonin doing S-Rank missions. If you don't mind that, then this game is pretty good. As another reviewer said, I like how each character has their own qualities. Lee is faster than Choji, and I believe other characters can jump higher than others (say, Kakashi and Naruto).