Okay...because people asked, I'll tell about V Cast. It was... not good. But it had some fairly decent moments. And to be fair, this was back in the day when cell phones were barely advanced enough to play games at all, so I suppose that in and of itself is fairly impressive.
CONTROL:
Sora has tank controls. Tank. Controls. What this means, is that Sora can only run forward. If you want to run in a different direction, you must stop, turn in place, then run straight ahead in the new direction. This makes dodging incoming attacks borderline, if not completely, impossible. You can jump, swing your Keyblade, and cast spells, when you get them. Very very simple. Items also exist, Potions and Ethers, and they are used automatically when your HP or MP get low. This means that, if you smack around a bunch of Heartless and buy a crapton of Potions, you're basically immortal. Good thing too given the lack of dodging capability.
New to this game, and I believe the only game that shares this trait is the ORIGINAL Coded, is the ability to die by falling off a cliff. There actually are platforming and balancing sections in this game, particularly in the final world, where you can die, several times, by falling. This was a trait that I actually didn't mind, for reasons I'll disclose further down.
PLOT:
Okay, so as near as I can tell, this game takes place smack dab in the middle of KHI, after Agrabah but before Hollow Bastion. Maleficent schemes to trap Sora in a nightmare, and if he can't wake before midnight, he will turn into a Heartless. She casts her spell, and Sora conks out right on the Gummi Ship in the middle of space while Donald's flying them to the next world. Sora "wakes" in his dream on Swashbucklers' Island, the first of four worlds in the game. Needless to say, he's a little disoriented, but a character simply called the Swordsman's Parrot guides him into building a raft. It's here that the first boss is met, Anti Sora. He mimics your every move, and if you try to attack him, he will attack as well and will always win the clash, damaging you. At the start of the battle, there is a hole in the ground behind Anti Sora. To win this fight, as soon as the battle starts: Take three steps back. Boom. You've won. Anti Sora will back up to mimic you and plummet into the hole to its death. Lamest. Fight. In. A. Video. Game. Ever.
Sora somehow uses his raft to sail to Wonderland. Wonderland is cool in a way, because you don't just fight the Heartless: Some of the native creatures attack you too. I don't remember too much of this, but I do seem to recall those bird glasses from the movie attacking you. If I recall correctly, Sora learns how to wake from his nightmare here: He meets the Caterpillar, also from the movie, and the Caterpillar reveals that if he wants to escape Maleficent's curse, he must concoct a potion: easy enough, save for the three main ingredients. The tooth of a Crocodile, a Serpent, and a Dragon. All throughout this, Donald and Goofy are looking for Sora as well. The boss of Wonderland is, conveniently enough, a giant floating ghost crocodile head. It will open its mouth to bite you. When it does, shoot it with magic. Eventually the croc will "die," and leave behind a tooth, the first of three that you need.
Agrabah is pretty straight forward. Jafar has taken over, yadda yadda. Interestingly, Sora becomes the Master of the Genie, and uses his wishes to get to Jafar. It is here that we come to my favorite part of the game: a Cobra Jafar fight. HELL. YES. I was always disappointed Cobra Jafar never made it into the main KH series, and even though this game is just a pitiful shadow of a proper KH game, it was still cool to see, even if he did only have one attack: lunge and bite. Anyway, beat the snot out of Cobra Jafar, and you now have yourself a snake tooth. Only one tooth to go.
Now we come to the final world: Maleficent's Fortress. Yes, BBS wasn't the first game to take us there. Not only that, but in addition to the Heartless, you also fight Maleficent's piggy minions from the movie and BBS as well! It's also here that Donald and Goofy catch up to you. You fight through the castle, then come to the final tower. It's here that death by falling is kinda cool, because the climb up to Maleficent for the final battle is NERVE WRACKING. See, you have to climb along the outside of the tower, and those tank controls make it dang difficult. Granted I'm no fan of Tank Sora, but still, that harrowing climb was a guilty pleasure. You get to the top, Maleficent stupidly changes into her Dragon form (I'm sorry, but are you an idiot? You do know a dragon tooth is needed to BREAK YOUR OWN SPELL, RIGHT?), you beat the snot out of her, and you get your last tooth. This fight is also one of the only fair boss fights in the game, because even though you still can't dodge, you can at least smack her fireballs out of the way with the Keyblade.
Anyway, for the grand finale, Sora races to one of Maleficent's cauldrons, create the potion with Donald's help, dump the Teeth in the potion, lights Goofy's head on fire because he got in the way of your Fire spell trying to cook the potion, THEN you light the cauldron, and jump inside the Cauldron into the brew. Sora immediately wakes up in the Gummi Ship once more. He tells Donald about his dream and is thankful that it turned out to be just that: a dream. Goofy asks if Sora is sure that it was just a dream... Sora turns back, and Goofy's head is still on fire.
...The end.
Let the confusion flow through you.