Yeah, there is.If you go to Google and type in walkthrough for yugioh world championship 2008,your first link should take you to gamespot where you will find the walkthrough.I will mention one thing:The walkthrough isn't complete.It only covers the first 3 worlds. Contributed by: an anonymous person who likes Naruto P.S. Sasuke Uchiha is the coolest!!!!!
download
No
None
yes u can
beat all the brainwashed duel spirits
it is in it just search for it
70902743.
It's for the ds
Yes, there is going to be a World Championship 2011, The only problem is that currently is unknow if it will be released for the DS or for the 3DS.
February 16th 2011 Enjoy
Summon it in a duel
there are none.