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.
Unfortenately it can only connect to itself not other WC Games
There are many action replay codes which can be used in the Pokemon games. There however, is not an action replay code to summon monsters without paying tribute in Yugioh World Championship for 2008.
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
February 16th 2011 Enjoy