My favorite Yugioh game from back in the day. Don't know if it still holds up though.
For those curious, here's the Gameshark codes I used (on the English (E) ROM).Master Code + All Cards (Press L+R before entering the Deck Construction menu)
- 03808074 ebafd7e2
- 94000130 000000ff
- d5000000 33333333
- c0000000 000000c1
- d6000000 02105bb0
- d2000000 00000000
OTK Deck
- Blowback Dragon
- Cyber Dragon x3
- Gear Golem the Moving Fortress x3
- Jinzo
- Proto-Cyber Dragon x3
- Shining Angel x3
- The Light - Hex Sealed Fusion x2
- Future Fusion
- Giant Trunade
- Graceful Charity
- Heavy Storm
- Limiter Removal
- Magical Mallet x2
- Mystical Space Typhoon
- Nobleman of Crossout
- Overload Fusion x2
- Sealed Gold Coffer x3
- Swords of Revealing Light
- Barrel Behind the Door
- Call of the Haunted
- Dust Tornado x2
- Magic Cylinder
- Mirror Force
- Ring of Destruction
- Torrential Tribute
- Cyber Twin Dragon x2
- Cyber End Dragon x2
- Chimeratech Overdragon x2
Completing the main story unlocks the ability to put a copy of one banned card in your deck. Reaching Duel Level 99 lets you put one copy of all of the banned cards in your deck!