Booster packs

Completed the indicated task to unlock the corresponding booster pack.

1. First Monster: Available at start.

2. First Spell-Trap: Available at start.

3. First Fusion: Play after May 7th.

4. First Effect Monsters: Available at start.

5. Step Up Spell-Trap: Available at start.

6. Step Up Fusion: Play after May 7th.

7. Anti Effect: Pack 4, 5, 6 has at least 80% collected.

8. Life Breaker: Pack 4, 5, 6 has at least 80% collected.

9. Go Go Direct: Pack 4, 5, 6 has at least 80% collected.

10. Visitor From The Dark: First stage Monday.

11. Emergent Fire: First stage Tuesday.

12. Water Of Life: First stage Wednesday.

13. Gift Of Wind: First stage Thursday.

14. Platinum Light: First stage Friday.

15. Earth Dwellers: First stage Saturday.

16. Lucky Economy Pack: First stage Sunday.

17. Endless Thoughts: Player over level 5.

18. Flip The Picture: Player over level 10.

19. Equip Me: Player over level 15.

20. More Eternal Memories: Player over level 20.

21. Speed King: Player over level 25.

22. Spice of Duel: Player over level 30.

23. Fairy's Sky: Player over level 35.

24. Dragon Drive: Player over level 40.

25. Fiend Night: Player over level 45.

26. Skillful Spellcasters: At least five characters cleared all three stages.

27. Cold Skin: 50% collected at the Duel Ranking.

28. Ritual Dance: Player play time more than 20 hours.

29. Symbol 50: Player over level 50.

30. Wave Of The Future: Ten consecutive wins.

31. Good Ol' Days: Ten consecutive losses.

32. Hero Emerges!: Have the best relation with Yuki Judai.

33. A Machines Soul Never Sleeps: Have the best relation with Sho Marufuji.

34. Beast Kingdom: Have the best relation with Hayato Maeda.

35. Maidens Heartbeat: Have the best relation with Tenjoin Asuka.

36. Never Give Up: Have the best relation with Manjoume Jun.

37. Warriors Pyramid: Have the best relation with Daichi Misawa.

38. Technology Master: Have the best relation with Ryo Marufuji.

39. Bit Players: Use the characters in page two to finish stages 2 and 3.

40. Vanilla Gloom: Using the characters in page three to finish stages 2 and 3.

41. Tag Survivor: Enter stage 2.

42. Princeton Power: Clear stages 2 and 3 with the Manjoume Brothers (No. 5, 28, 29).

43. Approach the Hotties: Clear stages 2 and 3 with Mindy (No. 20).

44. Dorothy's Soul: Clear stages 2 and 3 with Dorothy (No. 027).

45. Sadie's Soul: Clear stages 2 and 3 with Sadie (No. 026).

46. Midday Constellation (Noon Star): Enable cheat code (see above).

47. Double Triple Destiny Draw: Buy the Golden Egg.

48. Checkered Flag: Have over 90% cards collected.

Hints

Easy DP

Go to Free Duel mode and use a deck that uses as many cards that reduce your opponents as possible. Set the rules so that you and your opponent's LP are 2,000. Then, play them all from your hand for an easy win. Do this against a Obelisk Blue Girl for the biggest bonus. Use Tremendous Fire, Restructor Revolution, Ookazi, Final Flame, Hinotama, and even Sparks to achieve this.
vlmtu broadwayclothier

Getting a Tagforce partner

Find one of the seven people to be your partner (Jaden, Syrus, Chumley, Alexis, Chazz, Bastion, and Zane). Duel the one that you want to be your partner. After you win and get your DP you will hear a ringing sound. This indicates that you have gained trust. Go to the database in your Slifer red dorm room. Go to list of duelists. You will see the duelist you have defeated. Notice the heart shapes next to them. This is the trust meter. The closer you are from filling the eight hearts, the more likely they will be your partner. If the duelist you defeated does not ring after you win, then skip a day so that it does. One duel equals one sixth of a heart.
broadwayclothier

Use the following trick to get a Tag Force partner with sandwiches. In your room is a book icon. Select it and choose "Database" then "List Of Duelists". A long small bar with small hearts that increases with every action you made with the main characters will appear. Every Sunday you can duel in tag team with the higher heartbar character. Besides dueling and winning, you must talk to a desired one and give him or her sandwiches. Talk to them and choose from the first three topics. If you choose the academy, when something good happened as well to a desired character, his relationship heart bar will increase. You can deduct this sometimes, if you ask others and choose the rumors option. Sometimes they will tell you if something good or bad has happened to anyone in particular. Avoid talking with someone when they had unfavorable situations (even though they have particular feelings about some kind of sandwiches) To give a sandwich, keep pressing R and select item with Square in front of the chosen one. Just avoid giving them something that they do not like. Picking a sandwich can be difficult at first, but it takes some time to have a desired one. Jaden prefers curry, cook, fermented soybean. Syrus prefers vegetables, fruits, and girl preferred sandwiches. Chumley likes almost anything. Zane likes golden egg and sometimes Destiny sandwich. Bastion likes ham, steak, and all animal related food. Alexis girl prefers jam, grapes, and tangerines. Chazz likes delicatessen (lobster or caviar). This will increase the relationship as well and, in the case of the golden egg with Zane, your relationship will increase more than only dueling. Search for Pharaon and give him any kind of sandwich. He will start following you. When you talk with them, or someone who is upset with you, he or she will have more tendency to talk to you increasing your relationship with that character as well.
wiiwho?

Fight Jinzo

At 11:00 p.m. go to the forest. Turn left to go to the power substation. In the middle you will see Jinzo and be able to fight him. Note: His deck is mostly about using Malice doll and Ectoplasmer to his advantage. Use something that destroys continuos spells.
Mucoustwo

Defeating Kagemaru

Have a deck filled with spells and traps such as Magic Cylinder, Dark Hole, Lightning Vortex, Swords of Revealing Light, and Spellbinding Circle. Due to these cards, it would be best to have some deck thinning cards such as Pot of Greed, Jar of Greed, etc., which are best used in an Exoida/field control deck. Basically, use some remove from play traps on the Sacred Beasts that he might summon and use their attack against the CPU (Magic Cylinder, Snatch Steal, Blast Sphere, etc.). After you defeat Kagemaru you will fight him once more. After that you will have successfully finished Part 3 and will acquire one of each Sacred Beast card.
Joey

Cyber Dragon

Go to the lab and convert 99 cards to get a Cyber Dragon.
broadwayclothier

Pot Of Greed

Get a Golden Egg Sandwich and you will unlock the Drawing Pack. Get a Box Worth and you will most likely get an ultra rare Pot Of Greed.
broadwayclothier

Getting the cards you want from the store

When you are going to spend your DP on Booster Packs, save the game and go to the store. By doing this, if you get a booster pack with cards you do not like, you can restart the PSP and go back to the store without losing DP. This can be extremely useful when buying the booster packs that are worth 5,000 DP.
Kooki3

Sartorious

Successfully complete the game with Aster Phoenix as your partner.
mbmetbvniv

Egyptian God Cards

Use the "UMD Recognition" option with the original Yu-Gi-Oh! GX Tag Force UMD.
Snake-Eyes1980

UMD Recognition scans

Use the following UMD with the "UMD Recognition" feature to unlock the corresponding card. You will be get three of one card. This will not work with movie UMDs.
Snake-Eyes1980

Booster packs

Complete the indicated task to unlock the corresponding pack.

P01 (Beginner Monsters): Already available.

P02 (Beginner Spells): Already available.

P03 (Beginner Traps): Already available.

P04 (Time to Gear Up): Get 50% on P01 or complete game with all characters in Tier 1.

P05 (Intermediate Spells): Get 50% on P02 or complete game with all characters in Tier 1.

P06 (Intermediate Traps): Get 50% on P03 or complete game with all characters in Tier 1.

P07 (It's Fusion Time): Get 50% on P04 or complete game with all characters in Tier 1.

P08 (Expert Spells): Get 50% on P05 or complete game with all characters in Tier 1.

P09 (Expert Traps): Get 50% on P06 or complete game with all characters in Tier 1.

P10 (Creeping Darkness): Unlock at first Monday, level 45, or complete game with all characters in Tier 1.

P11 (Dueling with Fire): Unlock at first Tuesday, level 45, or complete game with all characters in Tier 1.

P12 (Raging Waters): Unlock at first Wednesday, level 45, or complete game with all characters in Tier 1.

P13 (A Gust of Wind): Unlock at first Thursday, level 45, or complete game with all characters in Tier 1.

P14 (Light from Above): Unlock at first Friday, level 45, or complete game with all characters in Tier 1.

P15 (Earthly Powers): Unlock at first Saturday, level 45, or complete game with all characters in Tier 1.

P16 (Taste the Attributes): 10% chance of unlocking per day, 80% complete on P10 through 15, or complete game with all characters in Tier 1.

P17 (Power of the Heroes): 24 partner with different characters in Tier 1, level 45, or complete game with all characters in Tier 1.

P18 (Machiner's Force): Partner with Syrus.

P19 (Cyber Girl Rhapsody): Partner with with Alexis.

P20 (Ojama Strike): Partner with with Chazz.

P21 (Control your Destiny): Partner with with Aster.

P22 (Dino Power): Partner with Hassleberry.

P23 (A Maiden's Love): Partner with Blair.

P24 (Over the Rainbow): Partner with Jesse.

P25 (Making the Team): Partner with any characters in Tier 2, level 45, or complete game with all characters in Tier 1.

P26 (Simple is Best): Partner with any characters in Tier 3, level 45, or complete game with all characters in Tier 1.

P27 (Test Of Luck): Complete the number 21 mini-game with 50,000 points, level 40, or complete game with all characters in Tier 1.

P28 (Dramatic A La Carte): Complete the throw ball mini-game with 100,000 points, level 40, or complete game with all characters in Tier 1.

P29 (Vanilla Flavored): Complete the get 400 friends mini-game with 400 friends, level 40, or complete game with all characters in Tier 1.

P30 (Reserve Magic): Complete the chess game with 50,000 points, level 40, or complete game with all characters in Tier 1.

P31 (A Fresh, New Taste): Get to at least 50 floor underground in class mini-game, level 40, or complete game with all characters in Tier 1.

P32 (Magic Carpet): Complete the game with 1 character from Tier 1 or Challenge 20% completed.

P33 (A Dragon's Tale): Complete the game with 2 characters from Tier 1 or Challenge 40% completed.

P34 (Back for More): Complete the game with 3 characters from Tier 1 or Challenge 60% completed.

P35 (Twilight Ruler): Complete the game with 4 characters from Tier 1 or Challenge 80% completed.

P36 (Celestial Sign):Complete the game with 5 characters from Tier 1 or win Sunday tag duel (Red).

P37 (Banner of Courage): Complete the game with 6 characters from Tier 1 or win Sunday tag duel (Yellow).

P38 (Don't Stop!): Complete the game with 7 characters from Tier 1 or win Sunday tag duel (Blue).

P39 (Spice Up Your Deck): Complete the game with 8 characters from Tier 1 or win Champion.

P40 (Rock Solid Tactics): Complete game with any characters in Tier 2, Challenge 20% completed, or complete game with all characters in Tier 1.

P41 (A Bug's Duel): Complete game with any characters in Tier 3, challenge 20% completed, or complete game with all characters in Tier 1.

P42 (Sadie's Special Pack): Complete the game with Seiko or play at least 50 hours.

P43 (Ms. Dorothy's Special Pack): Complete the game with Tome or buy at least 1,000 packs.

P44 (Champion's Pack): Challenge 20% completed or complete game with all characters in Tier 1.

P45 (Crush on You): Insert the original Yu-Gi-Oh! GX Tag Force UMD.

P46 (Midday Constellation): Press Up(2), Down(2), Left, Right, Left, Right, X, Circle when buying a booster pack.

P47 (Double Triple Destiny Draw): Get a golden egg or complete game with all characters in Tier 1.

P48 (Checkered Flag): Get 90% of all cards.

Hints

Free cards

There are free cards all over the map. Look on the ground and behind some walls to see if there are any hidden cards. Some cards are being stood on. To get these cards, skip school and go to where the people stood on the cards.
Snake-Eyes1980

Classroom

There is a time that you must go into the basement on the school. To use the ladders, press Square on the arrows.
Snake-Eyes1980

Glitches

Infinite loop

When dueling against Axel, have a monster out on the field that is the only one out that negates effects targeted to its own type (for example, Cyber Phoenix). If the CPU has Tri-Blaze Accelerator or Blaze Accelerator out and selects the monster (Cyber Phoenix), its effect will negate Tri-Blaze/Blaze and Axel will not discard a Pyro-type monster. This will continue in an infinite loop until you exit the game or turn off the PSP.

[none]

Card passwords

Enter one of the following passwords at the Password Machine to unlock the corresponding card for purchase. Note: You can only unlock cards you already have or have a pack list that contains the card.

Unlockables

Link bonuses

Note: This trick requires two DS systems. Create a wireless connection chat room with a DS running Yu-Gi-Oh Duel Monsters World Championship 2007. Then on a second DS with Yu-Gi-Oh! Nightmare Troubadour, join that chat room. You will unlock Yugi, Yami Yugi, Joey, Kaiba, and Yami Marik as duelists; and the Stuffy Collared Shirt (Clothes, Male), Pink Suit (Clothes, Female), and Cheap Disk (Disk, Male and Female).

Note: This trick requires two DS systems. Create a wireless connection chat room with a DS running Yu-Gi-Oh Duel Monsters World Championship 2007. Then on a second DS with Yu-Gi-Oh! GX Spirit Caller, join that chat room. You will unlock Jaden, Aster, Dark Zane, Alexis, and Chazz as duelists; and the Slifer Red Jacket (Clothes, Male), Obelisk Blue Uniform (Clothes, Female), and Alchemy Disk (Disk, Male and Female).

LP Survival mode

Defeat all level 1 and all level 2 duelists five times.
drlv wah imetmil

Alien Duel Disk

Get your card list to at least 90%.

Amazoness Duel Disk

Complete 55% of the duel puzzles.

Black Duel Disk

Complete 95% of the duel puzzles.

Pharaoh Duel Disk

Complete 100% of the duel puzzles.

Vampire Duel Disk

Complete 40% of the duel puzzles.

View mode

Complete 80% of the duel puzzles to unlock View mode in Free Duel mode.

Moonlight clothing

Complete 35% of the duel puzzles.

Recipe Duel mode

Complete 90% of the duel puzzles to unlock Recipe Duel mode in Free Duels. This option allows you to practice against your own deck recipes.

T-Shirt

Win 200 duels.

Forbidden card in deck

Earn an "S" rank S on twenty different Themed Duel challenges to be able to use one Forbidden card in your deck.

Level 5 duelists

Unlock the Level 3 Theme and Limited Duel.

Level 6 duelists

Unlock the Level 5 Theme and Limited Duel.

Hints

Easy DP

Complete lots of limited and theme duels to get challenge bonus 1x the number of challenges you did. Do 100 of them to get 100 extra DP every round. You will get 500 DP if you do a level 5 challenge and win.
broadwayclothier

Alternate music and background

Get to the level 4 duelist and limited duel level 5. Win at least one duel and the music as well as background will change when dueling anyone. If you turn the game off you must do the limited duel again.
broadwayclothier

Unlockables

Yu-Gi-Oh! Nightmare Troubadour bonuses

Note: This requires another Nintendo DS with Yu-Gi-Oh! Nightmare Troubadour. Select the "Wireless Connection" option in both systems simutaneously. In Yu-Gi-Oh! Nightmare Troubadour, create a room. In Yu-Gi-Oh! GX Spirit Caller enter the newly created room with Spirit Caller. The game should automatically save. Exit Wireless Connection mode on both systems. In Yu-Gi-Oh! GX Spirit Caller, go back to your dorm room and enter the closet. You should find the Stuffy Collared Shirt, Cheap Duel Disk, and a title based on your level and card collection in Yu-Gi-Oh! Nightmare Troubadour.
vlmtu

Duel Disks

Defeat the indicated duelist repeatedly until he or she gives you the corresponding disk.

Alchemy Disk: Professor Banner

Amazonness Disk: Tania

Gorgeous Disk: Admiral

Kaibaman Disk: Kaibaman

Pharaoh Disk: Abidos

Vampire Disk: Camula

Battle Dr. Crowler

After you win the School Duel preliminary match, find Crowler. He is usually at the Blue Boys dorm at night. He will say that he is going to train you for the School Duel. You can then battle him.
HffA5

Blair's return

After you defeat Nightshroud, go down to Island-South. Look around a little. This is extremely easy if all people are registered besides the story characters. Look around the lake and someone will appear with nothing above their head. Go there and Blair will appear saying, "Hee Hee! I secretly came to visit! Let's Duel!"
Joshua Peet

Duel uniforms

Complete the indicated task to unlock the corresponding uniform.
Jeffrey Miclat and HffA5

Academy Jersey: Defeat Fonda until she gives it to you.

Black Uniform: Defeat Chazz until he gives it to you.

Blue Uniform: Defeat Dark Zane until he gives it to you.

Duel Coat: Defeat Crowler until he gives it to you.

Hawaiian Shirt: Defeat Atticus until he gives it to you.

Kaibaman Coat: Defeat Kaibaman until he gives it to you.

North Academy Uniform: Defeat Chazz until he gives it to you.

Stuffy Collared Shirt: Link with Yu-Gi-Oh! Nightmare Troubadour.

Suit: Duel Chumley until he gives it to you.

Titan Coat: Defeat Titan until he gives it to you

Yellow Uniform : Defeat Professor Sartyr until he gives it to you.

Duel Spirits

Complete the indicated task to get the corresponding Duel Spirit. There are sixteen in all, and are usually found in the northern part of the island. Simply find them and defeat them to get a random chance that they will join you.
HffA5

Acrobat Monkey: Defeat Kagemaru.

Adhesive Explosive: Starter at well.

Babycerasaurus: After finalists are decided in tournament.

Batteryman C: Complete the game.

Batteryman D: Complete the game

Beelze Frog: After finalists are decided in tournament.

Blast Asmodian: After finalists are decided in tournament.

Dragon Capture Jar: Complete the game.

Ebon Magician Curran: After Abandoned Dorm events.

Hane-Hane: Defeat Bastion for the second time,

Jerry Beans Man: Starter at well.

Oscillo Hero #2: Starter at well.

Skelengel: Defeat Kagemaru.

Soitsu: After Abandoned Dorm events.

Star Boy: Defeat Bastion for the second time.

White Magician Pikeru: Complete the game.

Titles

Complete the indicated task to earn the corresponding title.

Dropout Boy: Lose 475 duels

King of Duels: Win 475 duels

Hints

Extra cards

When you read all of the tutorial at once at any time you can get a few extra cards (for example, Des Koala)/
Jason Nayve

Glitches

Buy almost all packs from a set for 150 DP

Note: This is described using buttons only, you can use the stylus if desired. This way is just easier and better detailed for description purposes. Enter the Duel Academy Campus. Choose "Store". Choose "Card Counter". Put the pointer over "Legend of the White Dragon" and press A. Press A to select the first pack only. Press B to return to the pack selection screen. Move the pointer over to the pack you want to "buy" all of and press A to enter it. Press A again to deselect the first pack of this set. This is the only way it will work. Press B to return to the pack selection screen. Move the pointer over to any other available pack. It must not be one you chose a pack from and must not be one that they are sold out of. Press R and the cost will go down to 150 DP. Press X and you will now have the new cards.
Anthony L.

Select any random pack then go in. Pick one pack only, then exit. After that, select the desired pack. Pick the first five packs. Exit then go to another pack that is in stock. Note: Do not pick any of the two packs from before. Then, press R and go back to the one you are going to by pressing L. Go back to another. Press R and all the packs should be only 150 DP. Note: You cannot buy all the packs using this trick. There must at least two packs and the one you want.
abu170

Missing text

When you stay out until

Yu-Gi-Oh! Nightmare Troubadour bonuses

Note: This requires another Nintendo DS with Yu-Gi-Oh! Nightmare Troubadour. Select the "Wireless Connection" option in both systems simutaneously. In Yu-Gi-Oh! Nightmare Troubadour, create a room. In Yu-Gi-Oh! GX Spirit Caller enter the newly created room with Spirit Caller. The game should automatically save. Exit Wireless Connection mode on both systems. In Yu-Gi-Oh! GX Spirit Caller, go back to your dorm room and enter the closet. You should find the Stuffy Collared Shirt, Cheap Duel Disk, and a title based on your level and card collection in Yu-Gi-Oh! Nightmare Troubadour.
drlv wah imetmil

Duel Disks

Defeat the indicated duelist repeatedly until he or she gives you the corresponding disk.

Alchemy Disk: Professor Banner

Amazonness Disk: Tania

Gorgeous Disk: Admiral

Kaibaman Disk: Kaibaman

Pharaoh Disk: Abidos

Vampire Disk: Camula

Battle Dr. Crowler

After you win the School Duel preliminary match, find Crowler. He is usually at the Blue Boys dorm at night. He will say that he is going to train you for the School Duel. You can then battle him.
HffA5

Blair's return

After you defeat Nightshroud, go down to Island-South. Look around a little. This is extremely easy if all people are registered besides the story characters. Look around the lake and someone will appear with nothing above their head. Go there and Blair will appear saying, "Hee Hee! I secretly came to visit! Let's Duel!"
Joshua Peet

Duel uniforms

Complete the indicated task to unlock the corresponding uniform.
Jeffrey Miclat and HffA5

Academy Jersey: Defeat Fonda until she gives it to you.

Black Uniform: Defeat Chazz until he gives it to you.

Blue Uniform: Defeat Dark Zane until he gives it to you.

Duel Coat: Defeat Crowler until he gives it to you.

Hawaiian Shirt: Defeat Atticus until he gives it to you.

Kaibaman Coat: Defeat Kaibaman until he gives it to you.

North Academy Uniform: Defeat Chazz until he gives it to you.

Stuffy Collared Shirt: Link with Yu-Gi-Oh! Nightmare Troubadour.

Suit: Duel Chumley until he gives it to you.

Titan Coat: Defeat Titan until he gives it to you

Yellow Uniform : Defeat Professor Sartyr until he gives it to you.

Duel Spirits

Complete the indicated task to get the corresponding Duel Spirit. There are sixteen in all, and are usually found in the northern part of the island. Simply find them and defeat them to get a random chance that they will join you.
HffA5

Acrobat Monkey: Defeat Kagemaru.

Adhesive Explosive: Starter at well.

Babycerasaurus: After finalists are decided in tournament.

Batteryman C: Complete the game.

Batteryman D: Complete the game

Beelze Frog: After finalists are decided in tournament.

Blast Asmodian: After finalists are decided in tournament.

Dragon Capture Jar: Complete the game.

Ebon Magician Curran: After Abandoned Dorm events.

Hane-Hane: Defeat Bastion for the second time,

Jerry Beans Man: Starter at well.

Oscillo Hero #2: Starter at well.

Skelengel: Defeat Kagemaru.

Soitsu: After Abandoned Dorm events.

Star Boy: Defeat Bastion for the second time.

White Magician Pikeru: Complete the game.

Titles

Complete the indicated task to earn the corresponding title.

Dropout Boy: Lose 475 duels

King of Duels: Win 475 duels

Hints

Extra cards

When you read all of the tutorial at once at any time you can get a few extra cards (for example, Des Koala)/
Jason Nayve

Glitches

Buy almost all packs from a set for 150 DP

Note: This is described using buttons only, you can use the stylus if desired. This way is just easier and better detailed for description purposes. Enter the Duel Academy Campus. Choose "Store". Choose "Card Counter". Put the pointer over "Legend of the White Dragon" and press A. Press A to select the first pack only. Press B to return to the pack selection screen. Move the pointer over to the pack you want to "buy" all of and press A to enter it. Press A again to deselect the first pack of this set. This is the only way it will work. Press B to return to the pack selection screen. Move the pointer over to any other available pack. It must not be one you chose a pack from and must not be one that they are sold out of. Press R and the cost will go down to 150 DP. Press X and you will now have the new cards.
Anthony L.

Select any random pack then go in. Pick one pack only, then exit. After that, select the desired pack. Pick the first five packs. Exit then go to another pack that is in stock. Note: Do not pick any of the two packs from before. Then, press R and go back to the one you are going to by pressing L. Go back to another. Press R and all the packs should be only 150 DP. Note: You cannot buy all the packs using this trick. There must at least two packs and the one you want.
abu170

Missing text

When you stay out until you have to go back to the dorm, it should say, "It's time to go back to the dorm." However, it says "It's time to go dorm".
HffA5

Wing Koriboh cards

Have the Game Boy Advance game Yu-Gi-Oh! GX: Duel Academy in the cartridge slot to start with get three Wing Koriboh cards. [Screenshot 1] [Screenshot 2]
Eddie The BigYeti Guerra

Hints

Pack lists

Register as a duelist

After defeating a duelist eight times, he or she will ask you if they can register you as a duelist. If you say "Yes", you can chose whether or not you want to play them the next time you encounter them.
Wesley Paul

Rock, paper, scissors

When dueling against an opponent, when you do rock, paper, scissors remember what you did in a previous duel and use the one that can defeat what you used last time.
Phillip Hess

Easy KC and experience

Duel Tea Gardner as many times as possible until she asks you to be your friend. Answer "Yes" and you will be able to duel her non stop until evening. To get more KC and experience, try this with other feeble or weak characters, such as Serenity and Mokuba.
grannyc

Never duel difficult duelists

All the easy duelists are out in the daytime. When it turns to evening, walk to your house and go to the shop. Do this until it turns to night. Go to your house and sleep. It will be morning again and you can duel easier duelists once more.
grannyc

Getting desired cards

When you are in the house, save the game. Go to the store and make sure you have enough money to buy a pack of cards. If the card you want is not in the pack, turn of the DS. Turn the game on again and you will end up at the house. Go back to the store. You will have your money again. Repeat this until getting the desired card.
SpykidsS

Recommended deck

One of the best decks is to make is an all around dark deck.
Sum Guy

Glitches

Misspelling

At the Duel Base, Roland says "Duerist" instead of "Duelist".
bob scholz

In the description for "Humanoid Worm Drake" (fusion monster with ATK/2200 DEF/2000) for the list of monsters needed for the fusion, it reads:
Nathanyel Langreder

[Aqua/Fusion]

"Worm

Ddrake"+"Humanoid

Slime"

Aqua Chorus card

If you unlock the card "Aqua Chorus" and look carefully at its name, it reads "Blue-Eyes White Dragon" on the card instead of "Aqua Chorus".
Nin

Blue Medicine card

The description of the card reads that both you and your opponent gain 400 LP. However, when after the card is played only you do.
Anthony

Sage's Stone card

The description of the card Sage's Stone reads "Sage's Jewel", but on the actual card itself it has the correct name.
bob scholz

Deck Destruction Virus and Deck Devastation Virus cards

On the card Deck Destruction Virus, it shows the picture and description of Deck Devastation Virus and vice-versa. However, when they are played they use the effect of the card named at the top of the screen.
Greeengoblinn1

Maximillion Pegasus disappears

In the North American version of the game, Maximillion Pegasus will not appear after defeating Odion. Get his deck recipe and trade cards with him before he leaves or you will be stuck with an incomplete recipe.
Benjamin Donaldson

Wrong card name

In your trunk, look at the card picture for "Aqua Chorus" (trap). It reads "Blue Eyes White Dragon" instead of "Aqua Chorus". This also happens with other cards.
Nathanyel Langreder

...

View mode

Have a 80% card collection.

Recipe mode

Have a 90% card collection.

One Forbidden card allowed banlist

Have a 90% card collection.

Stone Seal Challenges

Complete the indicated task to unlock the corresponding challenge.

World Of Grace

Master of OZ Stone Seal challenge: Defeat Curan, Knopse, Sonic Shooter, Skull Servant five times.

World Of Sunlight

Exxodd Stone Seal challenge: Defeat Kabasaurus, Wasteland Lady five times.

Neo Daedalus Stone Seal challenge: Defeat Abyss Soldier, Maiden of Ocean, Sea Serpent Darkness Soldier five times.

World Of Civilization

VtoZ Stone Seal challenge: Defeat Great Angus, FoxFire, Luster Dragon, Stronghold five times.

World Of Darkness

Venominaga Stone Seal challenge: Defeat all of the tag teams five times.

World Of Order

Exodios Stone Seal challenge: Defeat Dance Fairy, Mokemoke, Senjuu five times.

Rainbow Dragon Stone Seal challenge: Defeat Absorption Kid, Guardian Angel Jan, Marshmallon, Royal Knights, Freya, Thunder Nyan Nyan five times.

World Of Chaos

Armityle Stone Seal challenge: Defeat Green Gadget, Cyber End, Horus five times.

Chaos Neos Stone Seal challenge: Defeat E Hero Ailus, E Hero Malicious Edge, D Hero Blood five times.

Characters

Complete the indicated task to unlock the corresponding character.

GX characters

Jaden Yuki (Yuki Judai): Complete the Chaos Neos Stone Seal challenge.

Chazz Princeton (Manjoume Thunder): Complete the VWXYZ Stone Seal challenge.

Atticus Rhodes (Tenjoin Fubuki): Complete the Neo Daedalus Stone Seal challenge.

Tyranno Hassleberry (Tyranno Kenzan): Complete the Master of OZ Stone Seal challenge.

Yubel: Complete the Phantom of Chaos Armytile Stone Seal challenge.

Thelonius Viper (Professor Cobra): Complete the Venominaga Stone Seal challenge.

Jesse Andersen (Johan Andersen): Complete the Rainbow Dragon Stone Seal challenge.

Adrian Gecko (Amon Garam): Complete the Exodius Stone Seal challenge.

Marcel Bonaparte (Martin Kanou): Complete the Master Exxodd Stone Seal challenge.

Axel Brodie (Austin O'Brien): Defeat the Dragon/Cerberus team in World Of Darkness.

Dark Zane (Hell Kaiser Ryo): Defeat the last Guardian in the World Of Order.

Syrus Truesdale (Marufuji Sho): Defeat all five decks of the World of Grace Guardian.

Alexis Rhodes (Tenjoin Asuka): Complete all five challenges in the underwater map.

Bastion Misawa (Misawa Daichi): Win all the Structure duels in the colloseum.

Edo Phoenix: Complete all five Guardian challenges in World Of Darkness.

Pikeru: Give her a card that she likes in Single Duel mode five times.

Original anime characters

Yugi: Complete all Stone Seal challenges.

Kaiba: Defeat Kaibaman.

Joey Wheeler (Katsuya Jounochi): Complete six Stone Seal challenges.

Maximillion Pegasus (Pegasus J Crawford): Complete all Sphynx's challenges.

Bakura: Use traps 500 times.

Mai Valentine (Kujaku Mai): Use spells 750 times.

Bandit Keith: Summon 1,000 times.

Isis Ishtar: Accumulate 100 hours of gameplay.

Malik Ishtar: Accumulate 200 hours of gameplay.

Tag duel characters

Jasmine and Mindy (Junko and Momoe): Have 50 total tag duels.

Chazz and Alexis (Manjoume and Asuka): Have 100 total tag duels.

Jesse and Jaden (Johan and Judai): Have 150 total tag duels.

Kaiba and Yugi: Have 200 total tag duels.

Joey and Yugi (Jounochi and Yugi): Use Yu-Jo Friendship successfully (opponent accepts your handshake) in a duel.

Taniya and Misawa : Summon Water Dragon successfully in a duel.

Bakura and Malik: Win using Oujia Board (Destiny Board).

Zane and Sheppard (Hell Kaiser and Principal Samejima): Have a monster with 20,000 ATK in a duel.

Yubel and Marcel (Yubel and Martin): Have 10,000 DP.

Tournaments

Complete the indicated task to unlock the corresponding tournament.

Level 1: Unlock fifteen level 1 tournament opponents in Single Duel mode. Level 1 opponents are:

Stray Lamb, Jerry Beans Man, Winged Kuriboh, Reaper on the Nightmare

The Unhappy Maiden, Elemental Mistress Driad, St. Joan, Hino Kagu Tsuchi

Spirit of the Pharaoh, Otohime, D Hero Disc Commander, Dark Scorpion Menae

King of the Skull Servants, Watapon, Petit Dragon, Gravekeeper Chief

Kaiser Seahorse, Curse of the Vampire, Aquarian Alessa, Marie the Fallen One

Dark Magician Girl, E HERO Lady Heat, Il Blud, Chrysalis Dolphin

Level 2: Unlock fifteen level 2 tournament opponents in Single Duel mode and unlock Easy difficulty. Level 2 opponents are:

Manju of the 10,000 Hands, Airknight Parshath, Gear Golem the Moving Fortress

Ojama Yellow, Woodborg Inpachi, Silpheed, SandMoth, Water Dragon, Gemini Elf

Luster Dragon 2, Molten Zombie, Neo Space Pathfinder, Volcanic Doomfire

Light Effigy, Poison Cloud, Voltanis, Blowback Dragon, Kozaky, Shogun Shien

Sabersaurus, D.D. Warrior Lady, Sacred Phoenix Nephytis, Injection Fairy Lily

Level 3: Unlock twenty level 3 tournament opponents in Single Duel mode and unlock the Easy and Medium difficulties. Level 3 opponents are:

All of the anime characters, Demise, Cyberdark Dragon, Heraklinos

Vortex Kong, Evil Hero Hell Gainer, Ancient Gear Gadjiltron Dragon

Tag Tournament: Unlock fifteen opponent teams in Tag Duel mode.

Duel Disks

Complete the indicated task to unlock the corresponding Duel Disk.

Academy Disk Red: Win the Tag Tournament.

Academy Disk Yellow: Win ten consecutive Single Duels.

Academy Disk: Already available.

Adrian's (Amon's) Disk: Complete the Exodios Stone Seal Challenge.

Alchemy Disk: Defeat Jaden (Judai) ten times.

Alien Disk: Unlock all opponents in Tag Duel mode.

Amazoness Disk: Win all the Structure duels in the Colloseum.

Axel's (O'Brien's) Disk: Complete the World Of Civilization.

Black Disk: Defeat Joey (Jounochi) ten times.

Egyptian Disk: Defeat Marik ten times.

Girl's Disk: Defeat Alexis (Asuka) ten times.

Gorgeous Disk: Defeat Jesse (Johan) ten times.

Kaibaman Disk: Defeat Kaiba ten times.

Pharaoh's Disk: Defeat Malik ten times.

Standard Disk: Defeat Yugi ten times.

Vampire Disk: Unlock all opponents in Single Duel mode.

Yubel Disk: Complete the Armityle Stone Seal Challenge.

Costumes

Complete the indicated task to unlock the corresponding costume.

Red Uniform: Already available.

Brown Jumper: Already available.

Yellow Uniform: Have 400 total duels.

Blue Uniform: Unlock all GX anime characters in Single Duel mode.

Stuffy Collared Shirt (Blazer): Unlock all original anime characters in Single Duel mode.

T Shirt: Have 200 total duels.

Kimono: Complete all the Seal Stone Challenges.

King Coat or Queen Coat: Have a 85% card collection.

Academia Jersey: Unlock all GX anime characters in Tag Duel mode.

White Jacket or Gothic: Complete the World Of Civilization

Moonlight or Clerk Uniform: Win the Tag Tournament under the Easy, Medium, and Hard difficulties.

Elf Swordsman or Dark Magician Girl: Complete the World Of Order

E Hero Neos or Cyber Tutu: Have a 100% card collection.

Night Light or ?: Win five times with 20 Tag Team opponents.

Kaibaman Coat or Harpy Lady Costume: Win five times with 70 Single Duel opponents.

Hair styles

Complete the indicated task to unlock the corresponding hair.

Hair 12: Complete all the Seal Stone challenges.

Hair 13: Have a 85% card collection.

Amazoness Card Set

Defeat Amazoness Paladin at the Colosseum in Duel World using all of the structure decks. The Amazoness Card Set has Amazon Archer, Amazoness Blowpiper, Amazoness Chain Master, Amazoness Fighter, Amazoness Paladin, Amazoness Swords Woman, Amazoness Tiger, Amazoness Spellcaster, and Amazoness Archers.
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Hints

This trick requires two controllers. First, create a new profile (P2) in campaign mode. Save P2 before you do any battles. Then, exit to the main screen. Select versus mode. Load your main profile (P1) and P2. Go to the Entrance Hall and go to P1's Manage Monster. Go to "Build Unit". Put the monster you want to duplicate or level up into your Capsule Stock. Press Circle(3) and select your battlefield. Before you start the battle, have P1 ante the monster you just put in your Capsule Stock. Start the battle and on P1's first turn, surrender. Then, go back to the Entrance Hall and save P2, but do not save P1. Then, return to title screen. As long as you do not save P1, both profiles will now have the monster. You can repeat this process until one of your profiles has as many of the monster as desired. In about ten minutes, you will get three of the same monsters into one profile, which is useful if you want to get three Harpies or three Blue Eyes White Dragons to fuse together. Also, versus mode is great place to do the fusions, because there is no threat of an enemy attack. Use the next tip to level up your monsters for fusions.

Get the monster you want to level up into P2, as described above. Then, start the campaign. Use the desired monster to take out all but one of your opponent's monsters. Then, use the desired monster to take out your opponent's symbol. By doing this, you can take a level 1 monster to level 4 to 5 by the end of the first area. Against Joey alone, by taking out three of his monsters and his symbol you can get 160 experience points and what is given for the battle experience.