Yu-Gi-Oh! The Sacred Cards (Yu-Gi-Oh! Duel Monsters 7: Kettou Toshi Densetsu in Japan) is a Game Boy Advance game based on the Yu-Gi-Oh! anime developed and published by Konami. It was first released in Japan on July 4, 2002. It was released in North America the following year and in Europe the year after that.
Unlike the previous Yu-Gi-Oh! video games, this game has a story. It is based on the Battle City story arc of the anime. The player assumes the role as a friend of Yugi Moto as they compete in the Battle City tournament.
The rules of the game are slightly different from the real card game. They resemble the rules of Yu-Gi-Oh! Dark Duel Stories. Unlike the real game, there is an elemental ruling. For example, water beats fire, electricity beats water. Also, there is a notable absence of game phases and numerous card effects have been removed or changed.
The game starts when the player and his two friends, Yugi Moto and Joey Wheeler are preparing for the Battle City tournament of the card game known as Duel Monsters. In order to win the tournament, the player must obtain six Locator Cards which are received after beating certain characters in Duel Monsters. After all of the locators are obtained, the player is entered into the finals.
However, a mysterious person named Marik has a gang of card thieves known as Rare Hunters which he is using to obtain the three Egyptian God cards to bring the world to darkness. Marik’s rare hunters eventually take over the whole city. Even the owner of the card shop works for Marik and tries to kill the player. Then, the player meets up with a character named Ishizu Ishtar. She challenges the player to a Duel to see if he is strong enough to wield an Egyptian God Card. After she is beaten, the player must beat Seto Kaiba, the person that organized the tournament, in order to obtain the first God card.
After the player gets into the finals which take place on a blimp, he duels Marik. After Marik is beaten, it is found out that it was not really Marik. It was actually one of Marik’s servants. The real Marik was the person the player met earlier in the game that became one of Yugi’s friends: Namu. Then, Marik starts stealing the souls of those he beats. After Marik defeats Kaiba, the player must challenge Yugi. After Yugi is beaten, the player must face Marik. The game cannot be saved after beaten so once the game is beaten, the player will restart at the last save point.