I just got it... it's pretty fun of what I've played. I've only completed Traverse Town and the Colloseum, but it's pretty good so far. The battle system is nice, but has it's drawbacks, especially during bossfights. When I was fighting Hades, we had both used so many combos during the fight that we each only were left with 3 cards. I had a 0 and 2 keyblade attack and a 7 heal and he had like a 2, 6, and 5 attack. So for like 15 minutes all I did was break his cards with my 0 and then hit him with my 2 when he reshuffled. It was kinda funny, yet annoying. For a lot of boss fights I'm guessing you can just wait for them to run out of cards and then wail away at them.