All of the ones except V-Cast. The order of the games have to be mixed in order to make sense of them being linked. Chronological order:
BBS -> KH1 -> KH: COM/ 358/2 Days -> KH2 -> Coded/ Re: Coded -> 3D
You can go to www.egylines.org it's absolutly free
Besides the series of Kingdom Hearts, no.
The only Kingdom Hearts title for the PSP is Kingdom Hearts Birth By Sleep. Kingdom Hearts Birth By Sleep was released on January 9th in Japan and plans to come out sometime during the summer of 2010 in other regions.
Release Order:Kingdom Hearts (PS2)Kingdom Hearts: Chain of Memories (GBA)Kingdom Hearts II (PS2)Kingdom Hearts: Coded (Cell Phone)Kingdom Hearts RE: Chain of MemoriesKingdom Hearts: 358/2 Days (DS)Kingdom Hearts: Birth by Sleep (PSP)Kingdom Hearts Re:coded (DS)Kingdom Hearts 3D (Nintendo 3DS) [unreleased]Chronological Order:Kingdom Hearts: Birth by Sleep (PSP)Kingdom Hearts (PS2)Kingdom Hearts: 358/2 Days (DS)Kingdom Hearts: (RE:) Chain of Memories (GBA/PS2)Kingdom Hearts II (PS2)Kingdom Hearts: Coded/Re:coded (Cell Phone/DS)I've listed all of the current Kingdom Hearts games that have been released. Other games that have not been officially confirmed such as 'Kingdom Hearts 3' are not listed.
There is a Kingdom Hearts 2 Final Mix which is like a continuation of Kingdom Hearts 2. I'm not sure if there will be a Kingdom Hearts 3, but there are 2 new Kingdom Hearts games coming out soon. One is called Kingdom Hearts Birth by Sleep and it will be for the PSP. The other one is for the Nintendo DS and it's called Kingdom Hearts 358/2 Days. I hope this has answered your question.
http://www.gamespot.com/kingdom-hearts-ii/cheats/ here is a link to a great website that has the unlockables. and ignore the other person's answer because i doubt they have ever played any of the kingdom hearts games.
I would go to http://kingdomhearts.wikia.com/wiki/Kingdom_Hearts_Wiki and when on the website, on the left side of the page, role over Main Games and then click on Kingdom Hearts II. The website also gives you info on all the other games and so far has been a really reliable website, so you should be able to find out what Kingdom Hearts II is about, plus all the other games. :)
There is no true kingdom hearts 3 but there are multiple other kingdom hearts titles like Kngdom hearts 365/2
Since they are separated games from the other Kingdom Hearts, you'll have to buy it from online stores.
Hot Topic, You can go on-line at hottopic.com and search kingdom hearts and there's a kingdom hearts necklaces and other things.
If you mean the order of which they were made, here it is: Kingdom Hearts, Kingdom Hearts 2, Kingdom Hearts Chain of Memories, Kingdom Hearts 358/2 Days BUT THIS IS THE ORDER THEY ACTUALLY GO IN: Kingdom Hearts, Chain of Memories, 358/2 Days, Kingdom Hearts 2. Also, the other 2 upcoming ones: After Kingdom Hearts 2 will be Birth By Sleep (on psp) and Kingdom Hearts 3 (most likely on ps3)
Kingdom Hearts: Birth by Sleep goes back before number one. It puts ALOT of the story together, but you have to play all the other Kingdom hearts (Kingdom Hearts, Kingdom Hearts: chain of memories, Kingdom Hearts II, Kingdom Hearts: 358/2 days) to understand all of it. This game is EXTREMELY fun and I would definitely recommend it.