Well, Kaiba Corp. Virtual Duel System or KCVDS for short is a virtual dueling system (Duh!!) created by the so called Seto Kaiba.

This game is similar to YVD and is compatible with Windows XP, Vista and 7; it's totally manual, except for the draw and Standby Phases, which are automatically played when the player clicks the "END" button.

The game updates automatically with each version, Click Here to register and download the game, it's totally free.

This is a video that explains how to download and play with KCVDS, the video is from an older version of KCVDS but it explains the main controls, how to play cards and deck construction.

Just to mention, there are a lot of different Dueling Teams on KCVDS like Team Demolition X, Furious Elites, Lethal Edge, among others. There are also lots of Dueling Academies, like Toon World Academy and GX Dueling Academy. All the important teams and academies are registered on the forum Kaiba Corp. Team/Academy Universe.

As you can see, KCVDS is a whole dueling universe with lots of fans around the world, you should check it out.

Other details and important info:
-KCVDS uses dueling Lobbies that can be accessed from the game where the player can create and join duels either using IP adress or Hamachi adress. (similar to the YVD, the thing here is that you can duel random people every day and you don't have to reveal your IP adress to anyone)
-Right now, KCVDS has lots of cards, however there are some missing cards, mostly the newest cards. Since the updates are automatic, and works with animated graphics (don't get too excited, because these animated graphics are just for moving the cards from the hand to the field, graveyard, deck and draw) that make the game a little hard to program and update regurarly.
-There are some actions, like throwing a coin, dice, substracting and adding LP which are as they follow:
"/coin 1" to throw a coin once.
"/coin 3" to throw a coin three times.
"/dice" to roll the dice.
"/add 8000" to gain Life Points, works with any amount of LP
"/sub 8000" to lose/pay Life Points, works with any amount of LP
-Another important thing for you to know, is that there are some cards like the Crystal Beasts that go to the Spell/Trap Zone, or cards like Dark Necrofear that equip themselves to monsters on the oponent's side of the field, you can't do this in this game. What most of the players do is send those cards to the RFG Zone and make clear what they are doing with them, what card they target, etc.

Dude, you don't need to made 2 threads with a same name and same content. I'm gonna delete one.

... o.o I did? I'm so sorry... my internet connection is really crappy today... must have been that, my apologies.

Well, if the staby and draw are automatically then this game has kick-YVD-ass, tomorrow i will test it in my home computer... if i can usa it then i can partisipate in the tournament's : D...

o yea and soo yusei.

i play it too
with frends and um test deck.. here have all card...

The last time i'm testing KCVDS... it has no Charmer cards in it, even Scroll of Bewitchment, i can't use it. orz.

For now, I know KCVDS already has many cards, but, can we activate the effect of some cards like Convulsion of Nature to flip the Deck face-up? Or, can we use the effect of Crystal Seer to view 2 cards on top of our deck and move a card to the bottom of your deck? And, how about Big Eye or Pigeonholing Books of Spell, can we arrange the order of some cards on top of our Deck?

KCVDS animation is sure makes this game cooler than YVD, but, it lacks of update, meaning we can't test the newest cards from the newest set there...

If only KCVDS has the cards until the newest one, this game is surely kicks the Official Yugioh Online game and YVD...

Ok, KCVDS now has all the Charmer cards, except for Lyna.

There are some other effects, like Convultion of Nature that cannot be activated, there is no way to flip the Deck face-up. You can see the two cards on top of your deck by drawing them, then return them to the top of the deck in any order desired, you cannot send cards to the bottom of the deck, we usually just return them to the deck and shuffle it. And Big Eye, unfortunately, the opponent cannot manipulate the other's deck, the player affected by Big Eye's effect draws 5 cards and shows them to the opponent, then the opponent tells the player to return them to the top of the deck in the desired order.

Right now the current version (1.22) includes most of the synchro cards and support, including Majestic Star Dragon and Assault Mode cards, etc.

UPDATE:

• KCVDS is now version 1.27.
  
• The cards are Updated to DT08.
  
• End Phase isn't automatic now, the opponent must click "NEXT" in order to start his/her turn.
  
• Same comands (/sub, /add, /coin 1, /coin 3, /dice).
  
• Avatar option is now available, upload an avatar to the forum and you'll see it in KCVDS.
  
• Advanced search.
  
• Again, Draw and Standby phases are automatic.

And here's the forum, just register and then Download:

www.kaibacorporation.com

Is this Flash sprite based, or 3-D animation?
I may want to install this onto one an old laptop.