So i herd about the keyblade wars and all those keyblades we saw at the keyblade grave yard. anybody got any ideas on it?

maybe the war was about how the keyblade should be used probably most popular guess good vs bad

Well it was a war between light and dark, no one won because one can exsist without the other. So the wariors learned their lesson and perished without there keyblades.

Man, Roxas 13 beat me to it.

 

Basically he's right. There were thoses who wanted to use the Keyblade for order and justice AKA the good Keybladers, or the light. And there were thoses who wanted to use the Keyblade for chaos and destruction AKA the bad Keybladers, or the darkness. And when the two finally clashed, it caused the Keyblade War. But because there was no point as one cannot exsist to without each other, as it can disrupt balance and cause chaos (Huh, I guess you don't need darkness to cause chaos lol), they were all killed and then the war was finally over.

 

And thoses who fought and lost their lives had their Keyblade in the world's ground, thus honoring the Keyblader. And because there were so many Keyblades, it was called the Keyblade Graveyard.

 

So that's about it for this boring description of the Keyblade War.

 

And for some reason, Nomura is probably going to make a game about the Keyblade War, make it like Phantasy Star, have a Story Mode and then Online. It's probably bound to happen lol.