CheatCodes.com has all the official Yu-Gi-Oh! The Sacred Cards GBA cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Thursday June 20, 2013 for Yu-Gi-Oh! The Sacred Cards are shown below.
Enter 98025229 as a code in the machine at the card shop. Note: This can only be done once.
Red eyes black dragon's code is 74677422.
Go to the card shop and enter 98631139.
For the code of F.G.D with 5000 ATK and 5000 DEF is 99267150. Go to the card store to type it in.
Go to the card shop and type the following: 46986414.
Left leg: 44519536 Left arm: 07902349 Exodia head: 33396948 Right Arm: 70903634 Right leg: 08124921
Enter: 45231177 to get the flame swordsman
Enter the following code at the card shop to have Baby Dragon: 88819587.
After you get Obolisk, go to the aquarium. You will meet Mia and another guy she says has ben stalking her. Beat him and go to the toy shop. Talk to Mia and she will give you Cuber Harpie.
After you beat Ishizu and Kaible at the art gallery go to where Mokuba usually is and he'll be outside, challenge him and he will except.
To get the last warrior from another plant type in at the machine in the card shop 86099788.
Magnum is this duelist whose deck is full of warrior monsters. To battle him, you need to make it to the Battle City finals, but don't go to the place where that big plane is located. Instead, go to the aquarium and you will see Magnum asking Mai to marry him. Mai will ask you to duel him for her. She also says that if you lose, she will marry him, but if you win, Magnum has to leave her alone (as if I care). Then go to the location where that big plane is and if you beat Magnum, Mai will give you Cyber Harpy. If you go to the big plane before going to the aquarium, Magnum won't appear.
To beat Marik easy all you have to do is buy lots of light and dream cards. Also have your egyptian god cards.
Although Marik is rather easy heres a way to beat him easyer. Keep defeting duelests and get alot of zenny. (this startigy works the best if you save up money from the bigining). Then buy out the whole card shops cards. Then with all those duelests youve beaten youll have a lot of exsperiunce pionts so put all the good cards in your deck. Make sure to also have Obilisk and Slipher the sky dragon in your deck, There a big help!
To duel Rex Raptor you have to win against Esp Roba in the alley. Then you can duel Rex Raptor.
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