Yu-Gi-Oh! Eternal Duelist Soul Hacking

[Yak Attack]

YGO EDS Hacking​

Hello hello. I started to get frustrated with Gen 3 hacking, and randomly got interested in YGO. So today, in short, I bring you some resources for YGO Eternal Duelist Soul (GBA) hacking! The following are possible at the moment:

• 6bpp to 8bpp card graphics conversion
  
• Ban/limited list editing
  
• Booster pack editing
  
• Booster pack getting condition changing
  
• Booster pack graphics editing
  
• Card graphics editing
  
• Card stats editing
  
• Effects editing
  
• Fusion editing
  
• Opponent deck editing
  
• Ritual editing
  
• Starter deck editing
  
• Title screen editing
  

Everything can be edited using Hex Maniac Advance except for 6bpp card sprites. I highly recommend converting them to 8bpp so you can edit them easier within HMA.

Effect editing requires extensive knowledge of ARM7TDMI ASM, and extensive usage of HMA's THUMB viewer. You can ask me if you want anything coded, I like taking on challenges.

Also: I made a set of automation scripts for downloading/converting/inserting sprites in mass. I will update the thread when I clean up the code a little. I also made one big Google Sheets with formulas that can help you plan out a potential hack and insert stats/card names/card descriptions in mass as well.

Enjoy.

Google Sheets

HMA TOML

Discord

Credits:

• Yak Attack​
• Kertra (modded TM that reads 6bpp)​
• Haven (for making HMA)​
• YGOProDeck​
• Yugipedia​

 

[Arnie#0001]

Some great work there

 

[Yak Attack]

I am looking for a competent reverse engineer to figure out some more complicated aspects of EDS hacking. Here's the checklist, in order of priority:

• AI: Find and edit functions so we can use new effect/spell/trap cards properly
• Effects: Some effects aren't in the existing table; we need to find them. (They might be the entries at the end, I don't know what a lot of them at the end are)
• Table expansion: This is a major hurdle to hacking EDS atm. Being able to add new cards/new card sprites and add more cards to the ban/limited lists and Fusion/Ritual pools would be a major step forward

If interested, join the Discord.

 

[Martynunez12390]

I'm glad to see this game getting some love! I've always looked around every year or soo for a rom hack of this game and couldn't find one.

If you could do this, I'd be stoked! Could you make a hacked rom or just a patch that removes the ban from the god cards to make them usable? Everything else I would want to be vanilla. That would be awesome!

Actually unbanning every banned card would be better, but I've always thought that the god cards were the only ones that were unusable in the game. How to you get the other ones that are in your picture?

 

[Mnunez123]

So after research, I've learned that the monarchy, set sail for the kingdom, and glory of the kings hand are ticket cards. Yugipedia says they play the same roll as another game and that game says you temporarily possess them during tournaments, and can permanently own them by getting them by beating Simon. Are you able to verify if beating Simon has the ability to get these cards in some way?

I can't find anything relating to the cards that say none~111x
Do these cards have any type of images or roll or way to possess them in game?


Last question for you, if you can't get the ticket cards from Simon. Is it possible to make them be obtainable by Simon in some way? These cards would be okay to leave banned since they can't do anything in play anyways.

 

[C-NICK]

Wow, never thought I'd see a tool for romhacking EDS, much less one with this many features. Thanks for your work!

 

[Mnunez123]

Wow, never thought I'd see a tool for romhacking EDS, much less one with this many features. Thanks for your work!

Okay so I feel stupid now.... when I read this post, I understood it as they were making a romhack. Not making tools to hack roms with.

So with these tools, do you think I would be able to make a simple hack to enable the god cards for play in game?

I'm pretty sure that even though they are illegal by default, that their effects are still in game as there's a gameshark (code breaker?) Code to add all 3 on the field. I just want to be able to add them into my deck by default when acquired like any other card.

I cant code, but by the picture in the post, it looks to be a simple change a 0 to a allow 1 on the 3 cards. If there's more to it than that then it's beyond my comprehension.