Old PS2 game that came out around when Kingdom Hearts 2 came out. The only part I remember is being in a castle with a group of about 7 people and we had to go through the castle. One kid had purple hair. Each person had either super powers or weapons. The castle was kind of like a maze and you had to jump over the missing parts of the ground. I believe it was a multiplayer game, but I think it was an rpg game also. It's difficult to explain ><