@Bod: White Knight Story is Level 5, not Square Enix.

@Onna: Yeah, there are Sony diehards but I'm sure there are fewer of them than there are Nintendo diehards, since Nintendo had about a decade longer to make them, not to mention their handheld endeavors. For the most part, Nintendo diehards have a reason to be Nintendo diehards: forNintendo's titles which still sell millions after all these years. Sony on the other hand owes all of its success to third parties, and that's why people are still waving titles around like FFXIII. Take away the Metal Gears and the Final Fantasies and I'm not sure what Sony would have left. Not to mention that for diehard fans, supporting Nintendo was easier (and cheaper) than Sony.

Conversely, Onna, there are also most likely many people who never tried Kingdom Hearts on the PS2 and would be willing to do so on the Wii. Put simply, your point is this:

1) Kingdom Hearts will lose some fans it had during the PS2 days if it moves to the Wii.

I agree with this, however:

2) Kingdom Hearts will win some new fans it did not have during the PS2 days if it moves to the Wii.

Personally, I wouldn't be able to say which will be a more frequent phenomenon, but I think both are true to an extent. Clearly switching platforms can be a profitable decision for a series, as Metal Gear (NES to PS1), Final Fantasy (SNES to PS1), Dragon Quest (SNES to PS1/2 to DS) and many other games show.

Edit: Thank you Claude and Onna for the correction.  

@Claude: Yep I corrected Bodhesatva as well on that *LOL*.

Sony received / are receiving a few new exlusive titles:

-Resistance Fall of Man (Imnsoniac / 1st party)
-Heavenly Sword (Ninja Theory not sure 1st party?)
-White Knight Story (Level 5 / 3rd party?)
-Ratchet & Clank (Imnsoniac / 1st party)
-Folks Soul aka Folklore (Game Republic / 1st party?)

@Bodhesatva: you can say about every single exclusive game hitting other consoles fans will be left behind and it will receive new ones, that's nothing but a common change. It only depends how big the fanbase will become on the WII comparing to it was on the PS2 and of how many PS fans are willing to buy even a WII for it.

Actually, if I wanted to get nitpicky, Project Sylpheed shouldn't be on that list since it's not developed by SE. It was only published by them (and only in Japan at that, the US version was by Microsoft) and it was developed by GameArts, who they have no actual ties to outside of some publishing contract that must have started with Grandia III. They had no influence whatsoever over that game.

 @Onna: Insomniac is 2nd party, Level 5 is most definitely 3rd party but I'm sure Sony owns the White Knight Story license, and Ninja Theory I'm pretty sure is 3rd party since Heavenly Sword was originally in the works for Xbox, though I may be wrong about their current status.

Well a lot of PS2 fans simply don't want a PS3 and either own a Wii or will buy one. So your argument is completely invalid.

I agree, that's always true -- but you hadn't mentioned it. The only thing you mentioned is that Kingdom Hearts could lose fans if it switched consoles. All I did was mention that it could gain new ones, too. Definitely obvious, but needed to be stated. 

Insomniac is not first party, nor is Ninja Theory, nor is Game Republic. All of the games you've listed are being produced by Sony but developed by the companies you've mentioned; that makes them second party. Second party isn't really an official term, so you could call them ALL first party, if you'd like, but White Knight Story is definitely not third party.

Other games that actually are third party are Gradius 6, L.A. Noire, Metal Gear Solid 4, and Tekken 6. 

The definition of a second party game is one developed by an outside team but published by the system's producer. All of these games are second party. 

I never said you did say that. I said you omitted the fact that it will gain new fans while only stating that it will lose some. I am not accusing you of anything, I'm not arguing with you, I'm only pointing this out. Kingdom Hearts will gain a lot of new fans if it moves to the Wii. It sounds like we agree on that, and that needed to be said.

For example, if I had said: "Tons of new fans will flock to Kingdom Hearts if its put on the Wii. It will add a lot of new people to the franchise," that's probably a fair statement, but wouldn't it be worth noting that it will also lose lots of fans, too? It would be worth noting that, and that's precisely what I did, only in reverse. Again, I really don't know if it's likely to lose more old fans or gain more new ones, but it would see a lot of both. I personally don't care at all, because I absolutely loathe single player RPGs.

"The only thing you mentioned is that Kingdom Hearts could lose fans if it switched consoles".

With this comment it felt like the words were put right into my mouth, like that was all I was saying, while I started out to question about how the game will approach on the WII.

I don't see this as an argument at all, so don't worry ;)