If you want to unlock the cards yourself without taking a pre-made save, you can hex-edit the save.dat.
While there’s no official 1-click “unlock all cards” button for Power of Chaos: Legend Reborn, you can unlock 100% of the card collection by grinding duels, buying packs, and using in-game passwords. For a faster experience, consider playing modern Yu-Gi-Oh! titles like Legacy of the Duelist, which have smoother progression systems and larger card pools – legally available on Steam, Switch, and consoles.
If you found an old trainer or crack claiming “unlock all cards,” assume it’s unsafe. Play the game legitimately for the authentic early-2000s dueling experience.
If you want all 232 cards immediately without grinding, use a completed save file. The game stores data in: unlock all card yu-gi-oh power of chaos legend reborn
Windows XP / 7 / 10 (if installed normally):
C:\Program Files\Konami\Yu-Gi-Oh! Power of Chaos Legend Reborn\save\
Save file name: ygo_save.dat
Note: The final 10–15 cards (like Tri-Horned Dragon and Right Leg of the Forbidden One) only drop from Pegasus or Bakura at Duelist Level 48–50. If you want to unlock the cards yourself
Once you have a basic beatdown deck:
Legend Reborn often retains the cheat code input system from the original Power of Chaos engine. This is a legitimate way to unlock cards without spending Starchips, provided you have the correct codes.
Yu-Gi-Oh! Power of Chaos: Legend Reborn occupies a unique space in the history of Yu-Gi-Oh! PC games. It is not an official Konami release, but rather a widely celebrated "Mod" (modification) of the original Power of Chaos engine (specifically built over Yugi the Destiny). Because it is a fan-made creation, the mechanics for unlocking cards function differently than official retail games. While there’s no official 1-click “unlock all cards”
In the standard game, players must duel repeatedly to earn "Starchips" to buy cards. In Legend Reborn, the system is streamlined to encourage building powerful decks quickly, but unlocking the entire card library (over 1100 cards) requires specific steps.
Here is the detailed breakdown of how to unlock every card in the game.
This is the gold standard. You replace your save file with one created by a veteran player who has already unlocked every single card (often 99x copies).
Step-by-Step:
What this gets you: Every card in the game, usually with 3 copies (sometimes 9), max DP, and all duelists unlocked.