So youre saying you want a tag team duel?, but you dont want complex rules do you?, then here ill give you a list of the best programs that can do the work for you, of course if you want to play someone its gonna need that too.

First off the most known one, YGOPRO, its awesome, yet its quality is not as good as DN, but if you want a tag team duel, thats the best quality you can get, and you even have anime version updated with a lot of cards. definitly a recomendiation if you want to try out a lot of cards.
( http://percival18.blogspot.com.ar/ this is the versions i recomed, doesnt matter if anime or normal, yet the farily translated ones that this guy made)

After that you got Byond, not as good, yet it doesnt even take 5 minutes to download, you do have to register but its really easy, it doesnt even need a registration email key, now, this offers 2 yugioh games, duel monster genesis, and duel monsters expert, i recomend DMG, but DME has anime and manga cards, yet theyre just finishing the synchros now, while DMG has alreadt all the TCG cards, now the cool about this guys is that, sacrifing image quality, and easy to use interface, you get a lot of posibilities, tag team duels of course, yet also all vs all duels of up to 4 people, 3 vs 1, heck, you even have card games on motorcycles!! (you need to download this first, http://www.byond.com/download/.
after that http://www.byond.com/games/EternalDuelistSoul/DuelMonstersGenesis download this, but youre gonna need to play on the same server that your friends are)

Wich one you want is not that hard of a decision, id say you can have both, if youre patient enough, to get all the ways of dueling possible.

In my opinion, tag duel is very complex and hard if you have a random partner. I'd rather duel alone cause it won't disturb my strategy. It's my opinion though, tag duel can be kinda fun.

i already have YGOpro it is 10 times better than DN
reasons :
1) all auto
2) we can turbo duel
3) we can tag duel
4) everyone can choose his sleeves and background

Everyone has their different opinions Mouzou, i personally like DN
Reasons? simple

1: it is not auto: it makes you learn spell speed and timing
2: your card backing and avatar are based on your skill and your experience
the higher your skills the better stuff you get
3: you can be creative in DN, much more so than something that is automatic

But everyone has their own likes and dislikes, so i will not judge.

yeah DN really help you know the ruling better , but i can say in this DMG(duel monster genesis) is the best sence it is not auto , but you can play like you are in real anime , so awesome for RP

its at choice, i personally love a bit about everything and i left that pretty clear, YGOPRO has its things, DN and DMG too, i dont have a favorite, as of rigth now the best in 1 vs 1 is DN, and thats all im doing at the moment

hmm i think DMG is better than DN ^^

I'd prefer DN cause I don't need to download it but I do want to try YGOPRO sometimes

YGOpro download a little annoying i have to say
but byond download is easy

yet image quality, and then we go unable to choose again...

well each game have it good and bad sides

sure, like if what i said didnt left that clear enough >.>

lol i was saying that i agree with you