no there are no rules in underground duels
Yes, underground dueling is a kind of play with no rules
if you mean online pc games theres kaiba corp, yugioh dueling network thats all i know
yes there is yugioh gx also there will be yugioh 5ds i really dont think 5ds will be very good because they are dueling on motorcycles but there might be an interesting new dueling mechanic to make duels more interesting. Guess we'll hae to wait till it comes out in the U.S.
no only if the other person gives up
You can return to the Facility after you have completed the Story Mode.
I would say yugioh..way easyer to learn..they have touraments..and Pokemon don't even have a rule book...i have 4 years of yugioh dueling experience
The rules are here: http://entertainment.upperdeck.com/yugioh/en/gameplay/rulebook/rulebook_v06_EN.pdf
Go to yugioh-card.com to learn the rules. You can also get a rulebook in each structure deck and a "beginner's guide" in each starter deck.
There's DevPro (type in devpro yugioh), you can download it or: Dueling Network (no download, just sign up)
You draw 1 card, as usual.
40 or more.
Completing downloadable Duel Puzzles, as well as dueling computer and players online, is another way to earn DP (Duel Points).