I bought this game and returned it within 24 hours.

User Rating: 4.5 | Dynasty Warriors DS: Fighter's Battle DS
I completed this game in less than 2 hours. I have to admit I had not heard of the the series before so I was willing to give it a chance, and then I just wanted to get rid of it.
The game is irritatingly repetitive. There is no difference between the first and last levels. There is no character development and neither you nor your enemies become any harder.
Imagine playing final fantasy but without the stat improvements, imagine the enemies remain at the same strength and they can be easily beaten, imagine the enemies have no ai and can be easily defeated, imagine walking through locations you have completed over and over again, and so on.
The game seems okay at first but after playing for one minute you've seen all the game has to offer, which isn't much. The idea of collecting "cards" is bizarre, and the way the cards are organised by race means you have no idea who to choose, and felt no compulsion to collect the cards.
In short this is an average game but with some truly terrible flaws.