For those who can't get to the site, the game is set up like this. Axel, Roxas, and Xion are dispatched to various worlds defeating Heartless. Choose one of the three, and you start the game. You defeat Heartless one at a time, challenging them to this puzzle game. Every time you clear blocks, you deplete your opponents HP. Defeat a set number of lower level Heartless, then a higher level boss, and move on to the next world as the level increases.
Credit goes to Sora the Key of KHInsider for the find.
Bejeweled, KH Days style, found surprisingly at Disney's website, of all places.
Kingdom Hearts Magical Puzzle Clash
For those who can't get to the site, the game is set up like this. Axel, Roxas, and Xion are dispatched to various worlds defeating Heartless. Choose one of the three, and you start the game. You defeat Heartless one at a time, challenging them to this puzzle game. Every time you clear blocks, you deplete your opponents HP. Defeat a set number of lower level Heartless, then a higher level boss, and move on to the next world as the level increases.