Not as good as its origin, Kingdom Hearts, but it definately makes good terms as a "sequel".
Sora enters the castle and is stroked into a world that is real to him - but only through his memories. Each of Sora's memories is forged into a card, which he uses to summon familiar friends, unlock mysterious doors, and even gateway new worlds. Throughout the game, Sora must use these cards to battle enemies and defeat bosses.
But something more nefarious is at work. The Organization, a group of "Nobodies" that are devoid of any emotion, have captured a witch, Namine, and is forcing her to...well, you'll see!
This game is definately worthy in some aspects. The graphics were good for a GBA game, but in some cases, they did not capture the true magic that is ignited by a Kingdom Hearts game. The sound, ultimately, expressed the feelings of the scenery, yet they were not filling enough to be flawless.
I really didn't enjoy the fact that battles were governed by cards, but you get over it after a few battles. All in all, Chain of Memories wasn't as good as its origin, but it still pleases hardcore fans of the franchise.
I recomend this game to any fan of the original Kingdom Hearts, or people who enjoy Disney and Final Fantasy at its best.
***/***** - Three stars out of five.
I hope I have helped your gaming choices in some way.
All the best.