The Campaign is a free to play, single player game mode available to Duel Generation players. It is accessed by clicking on the CAMPAIGN button in the Main Menu of the game.
The Campaign includes 80 characters from the Yu-Gi-Oh! television shows for you to practice against and start earning Duel Points. Each time you beat one of the characters, another one is unlocked for you to try next.
Each character has an easy Deck and an expert Deck. The first three matches versus any opponent are played against their easy Deck, and winning will earn you Duel Points, bonus Cards and a new Deck Recipe. The last three matches are against their expert Deck with similar rewards for winning. If you defeat any character six times you will also unlock their image that can be used as your personal Avatar in the game.