Road To Platinum Kingdom Hearts: Chain Of Memories - Room Creator and Platinum!
This is my video of getting "Room Creator" and the Platinum for this game.
For room creator, just use all your maps card like there's no tomorrow! You can use them during the game or just grind this when you get everything else.
This game is an easy platinum, but with some grinding trophies that, however, are not so boring.
For roadmaps and useful links and strategies, www.playstationtrophies.org!