Like the other Kingdom Hearts games, Chain of Memories has an intricate, deep plotline, excellent graphics, and good characters. Sora and his friends are positive, determined people; in short, good role models. There is fantasy violence in the playing part of the game, and some violence in cutscenes- a character throws an unconscious character to the ground, and hits another character across the face, throwing her to the ground. Another character holds a weapon threateningly to a character's throat (the Marluxia-Namine thing near the end, for those wondering).
All in all, a very good game. Worth playing.