Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\KONAMI\Yu-Gi-Oh! Power of Chaos\system (or similar path depending on your Windows version) .
Because these games were built for older versions of Windows, the save data relies heavily on the Windows Registry. Follow these precise steps to inject an all-cards save file into your game. Step 1: Backup Existing Saves
If your cards do not unlock after running the .reg file, Windows is likely blocking the registry write due to administrator restrictions.
Right-click the game executable (e.g., joey_pc.exe ), select , go to the Compatibility tab, and check Run this program as an administrator . Cards Resetting After Closing the Game
: If you don't see it above, check %LOCALAPPDATA%\VirtualStore\Program Files\Common Files\KONAMI\Yu-Gi-Oh! . Step 2: Replace the Save File Yu-gi-oh Power Of Chaos All Cards Save Game
using the most powerful cards from that era, or should we write a duel scene where Leo uses his new "God" deck?
To unlock all cards in the series ( Yugi the Destiny , Kaiba the Revenge , and Joey the Passion ), you must synchronize a specific save file with your system's registry. Because progress is tied to a unique hardware ID stored in the registry, simply copying a system.dat file is often insufficient. Essential Files and Locations
Run the all-cards registry file after all three games have been launched at least once. This ensures the registry paths for all three titles exist before the unlock script overwrites them. Embracing the Full Deck-Building Experience
However, the game features a notoriously brutal card unlock system. Winning a duel rewards you with only one to three cards from a massive pool. To bypass hundreds of hours of repetitive grinding and jump straight into deck-building with iconic cards like Exodia or Obelisk the Tormentor, players turn to an file. Follow these precise steps to inject an all-cards
This file stores your custom decks, game options, win/loss records, and current duelist ranking. It is typically located in the installation folder of the last installed game (usually Joey the Passion ).
Click on the Windows confirmation prompt to inject the card data into your registry. Direct Database Comparison: Card Pool Breakdown
However, one common frustration persists: initially, you only have a small, weak starter deck. Earning new cards by winning duels can be a time-consuming grind. This guide provides several straightforward methods to instantly unlock all cards and enjoy the game to its fullest.
To unlock all cards, you must replace your local progress file ( system.dat ) and often modify your Windows Registry to ensure the game recognizes the new data. Step 1: Locate the Save Folder Cards Resetting After Closing the Game : If
Look for the .reg file included in your download (often named allcards.reg or unlock.reg ).
For players looking to experience the full strategy of the classic PC trilogy, a is the ultimate shortcut to unlocking all 700+ cards instantly without hundreds of hours of repetitive grinding.
Paste the new system.dat into the folder identified in Step 1. Step 3: Update the Registry (Crucial)
If the save file does not work immediately, try these solutions: