Yu - Gi - Oh ! The Eternal Duelist Soul Yu - Gi - Oh ! The Eternal Duelist Soul is a Yu - Gi - Oh ! video game for the Game Boy Advance . It is the international version of " Yu - Gi - Oh ! Duel Monsters 5 Expert 1 " . Gameplay is similar to standard dueling rules , except that the Side Deck allows less than 15 cards , and is more for convenience of getting to cards for your Deck than switching between duels , as CPU duels are single duels rather than matches ( with some exceptions in events ) . Gameplay . You begin with either a red , green , or black deck . Opponents are arranged in " tiers , " with higher tiers unlocked from already open tiers . A tier may consist of 4 or 5 duelists . In order to advance , all duelists on a tier must be beaten a certain amount of times before the next tier can be unlocked . Beating a tier also unlocks certain in - game events , such as special cards that can only be received by beating that tier . Another important aspect of the game is its in - game calendar . On certain days of the week ( not actual days , as the game does not support a real date function ) in game , random events may occur , such as receiving a pack of cards in the mail or being challenged to a Match by an opponent . Each time after finishing a duel , the calendar moves on to the next day . This is also the first game to include Polymerization as an actual card . There are 819 different cards in total , counting the Egyptian God Cards . The counter in the " Deck Edit " menu counts the total amount of cards collected , including multiple copies of a card you received . You can receive of upwards to 10000 + cards with the counter . Aside from the above , this game is nearly identical to " Stairway to the Destined Duel " except that the default animation speed is slower and you have the option of pressing and holding one of the buttons on the game console to speed it up . There are also notably less cards to choose from in comparison to the aforementioned game . Duelists . Tier 2 . Defeat all Tier 1 duelists 2 times each to unlock this tier . Tier 3 . Defeat all Tier 2 duelists 3 times each to unlock this tier . Tier 4 . Defeat all Tier 3 duelists 4 times each to unlock this tier . Tier 5 . Defeat all Tier 4 duelists 5 times each to unlock this tier . When you reach the 5th tier , it is likely that only the Duel Computer is unlocked unless you fulfill all the conditions as mentioned . Maximillion Pegasus is unlocked by obtaining a Toon World card by password or booster pack . Shimon Muran is unlocked by winning the National Tournament held on November and Truesdale is unlocked after collecting all 819 different cards or beating Simon once . Also , by defeating Simon once , a copy of every card available in this game is added to your Trunk and the Multi - colored Millenium Puzzle is unlocked . Note that occasionally , Solomon Moto won ' t be unlocked and would remain unavailable even after you did the requirements in order to unlock him as this is a glitch that seems to happens randomly . If he isn ' t unlocked , you can ' t unlock him any other way unless you start a new game . While the Duel Computer claims that it is building a deck to counter yours , it actually uses the same deck every time you face it . Its strategy revolves around effects that hinder the opponent ' s strategy , which creates the illusion of the game deliberately countering the player ' s deck . Pegasus is programmed to be able to see the player ' s hand and face - down cards . However , due to the game ' s limited AI , it has little impact on the game and is barely noticeable . Pegasus will not attack a face - down defense position monster that he cannot destroy , but he will not change his strategy in any other way . Cards . As more Tiers are unlocked , new Booster Packs will be able to be chosen to reinforce your deck . However , some packs will be unlocked only after defeating an opponent a certain number of times . On the other hand , Magazines are events that give you cards from two special " sets " ; the Weekly Yu - Gi - Oh ! event happens every Tuesday of the week and the Yu - Gi - Oh ! Magazine happens every 21st of the month . There are 819 total cards , counting the 63 cards which don ' t have password ( Egyptian Gods included ) . Like many previous and later Yu - Gi - Oh ! games , it also uses the 8 - digit passwords printed on most cards to unlock new cards . Cards are kept in a Chest where they can be accessed through the Deck Edit in the Main Menu , and may be placed in the Deck or Side Deck . Fusion cards that are added to the Deck do not go towards the 40 card minimum , but as there is not any kind of Fusion Deck in the Deck Edit , they are put together with the Main Deck . The game follows the May 2002 Lists , which did not include any Forbidden cards . You will find here the list of the cards as well as their gallery . Booster Packs . This game follows the real OCG booster packs with some slight variations and different covers ( in the Japanese version it uses the same real covers ) . However , some of the special packs ( namely the Millenium Puzzle ones ) don ' t . Here is a list with the Boosters and their real - life packs ( when applicable ) : Card List Cheats and glitches . Some of Kaiba ' s dialogue is incorrectly translated in the English version of the game . If Kaiba defeats the player , he will state that " There is only one worthy of the title of ' duelist ' . . . and that is Yugi ! " This error is particularly humorous , since Kaiba would never admit that Yugi is stronger than him . The correct translation is " The only duelist who I recognize is Yugi ! " Faster play : When you ' re playing the rock - paper - scissors before starting a duel , hold R and don ' t let go until the duel begins . When the duel starts , the duel will go faster . This is like continuously holding the B button . Solomon Moto unlock Glitch : On some occasions , Solomon Moto isn ' t unlocked despite collecting every different card or beating Simon once . Most of the time , he is unlocked . In extremely rare cases , after a few months or years , Solomon Moto becomes unavailable , also without any known reason . The only way to fix this is to start a new game . Look at all cards : If you activate Prohibition , you can see all the cards available in this game , excluding the Egyptian God Cards though . Spear Cretin Glitch : Spear Cretin does not remove the card from your graveyard you target for special summon with its effect . No AI in the game can get past two Spear Cretin for this reason . Sangan or Witch of the Black Forest Glitch : Have Sangan or Witch of the Black Forest in your graveyard and then bring it back with Call of the Haunted or Premature Burial , then destroy the monster with a card effect . When this happens it will activate a glitch that will activate Sangan or Witch ' s effect twice instead of once . This is a faster way to get Exodia cards to your hand . Change of Heart Glitch : If you use Change of Heart more than once in the same turn ( for example , by using it once , flipping Magician of Faith and returning it to your hand , and then using it again ) , only the last card you use Change of Heart on will return to your opponent ' s field at the end of your turn . The other ( s ) will remain under your control . Giant Trunade ' s Glitches If you used Snatch Steal to take control of an opponent ' s monster , then you can use Giant Trunade to return Snatch Steal and you keep the opponent ' s monster . Tribute to The Doomed Glitch : You can not activate Tribute to the Doomed if the card is set and you have no cards in your hand to discard , however , you can play Tribute to the Doomed without discarding a card when that card is the only card in your hand . Obelisk the Tormentor : To get Obelisk the Tormentor you must be able to have the Green Millennium Puzzle unlocked . After that , you can receive Obelisk . The Winged Dragon of Ra : The Ra God card can only be obtained by getting it in the Monthly Yu - Gi - Oh ! Magazine . Slifer The Sky Dragon : To get Slifer The Sky Dragon God card , unlock the Golden Millennium Puzzle Booster Pack . You will eventually get it . Duel " unknown " character : On May 1 ( in game time , days may vary ) , a man will duel you . He states that if he wins he will take your rarest card . He will pick which card he wants ( for example Blue - Eyes White Dragon ) . If you win , you ' ll gain 5 random cards . Control numbers on Skull Dice or Graceful Dice : Hold B to make the number higher or A to make the number lower . This works almost every time . Do not lose life points from Graverobber card : Once you play Graverobber , set the card instead of immediately activating it . Once the card is set , activate it and you will not lose 2000 Life Points . Duplicated cards via link : To duplicate a card , trade with a friend . When you go to trade , one person pushes the trade button , when their card appears back on their screen , the other person pushes the trade button . There you have the original card and the traded card , plus your friend has both cards also . Password System . Passwords can be found on the lower left hand corner of actual physical Yu - Gi - Oh ! cards . In this and many other games , a password screen allows these codes to be entered to unlock new cards . However , there are two conditions to this : Promotional cards . As an added bonus for buying this game , three previously unreleased Holofoil Rare cards are included . Though not immediately available in - game , they could have their passwords entered immediately . Multi - player . EDS supports 2 player Versus play , provided each player has his / her own Game Boy Advance and their own copy of Eternal Duelist Soul . Also , one Game Link Cable is required to connect the systems ( the game is not compatible with the Wireless Link accessory for the GBA ) . Players can also transfer cards between copies of the game .