Yu - Gi - Oh ! The Sacred Cards Yu - Gi - Oh ! The Sacred Cards known as Yu - Gi - Oh ! Duel Monsters 7 : The Duelcity Legend in Japan , is an RPG - style game for the Game Boy Advance . For the first time , players had the opportunity to use the Egyptian God Cards in the video games ; albeit with altered effects to adhere to the game ' s simplified gameplay mechanics . The story of the game loosely followed the Battle City story arc of the anime and manga , with adjustments to allow the player to act the part of a major character and participate all the way into the Battle City Finals . One important thing to note is that the game automatically cuts to the ending sequence immediately after the defeat of Marik Ishtar , with no option to save . Because of this , any money or rare cards earned in the final duel are irrelevant , and the player never has an opportunity to use The Winged Dragon of Ra without the use of a game - hacking device . The only way to do this normally is to allow Marik to Summon Ra and destroy it ( or somehow discard it from the hand ) , then Special Summon it from the graveyard . Also noticeable that even in the English version of the game , most of the cards have their original OCG artworks like " Soul of the Pure " , " Monster Reborn " , and " Last Day of Witch " . A Konami ' cameo ' in this game is the Miracle Moon music in the arcade , which is taken from the " Beatmania " series of games . Storyline . The game starts when the player and his two friends , Yugi Muto and Joey Wheeler are preparing for the Battle City tournament of the card game , " 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 the Ghouls , 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 Ishizu Ishtar , who challenges them to a game of Duel Monsters , 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 can ' t be saved after beaten so once the game is beaten , you will restart at the last save point . Gameplay . Duels . Dueling partially resembles the real - life game mechanics , albeit with some elements that make it resemble Duelist Kingdom rules . Deck Building . Two factors dictating deck building are Duelist Level and Deck Capacity . Every card has a Deck Cost associated with it . To use a card , a player ' s Duelist Level must be equal to or higher than the card ' s cost . This cost also determines how much Deck Capacity the card occupies , and all the cards in the player ' s Deck must be equal to or less than the Deck Capacity available to the player . A Deck must have exactly 40 cards . Deck Capacity is increased by winning Duels . Every 3 Deck Capacity increase or so grants you 1 Duelist Level increase . Reception . " Yu - Gi - Oh ! The Sacred Cards " received mediocre reviews with an average of 58 % on Game Rankings . It was criticized for its shortness . However , the game sold nearly 1 million units , with 750 , 000 copies in the United States and over 238 , 000 in Japan , and received a sequel , Yu - Gi - Oh ! Reshef of Destruction . Video game - only cards . At the time of its release , " Yu - Gi - Oh ! The Sacred Cards " featured 26 cards that did not have an " OCG " / " TCG " version .