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Introduction
Many consider Phantasy Star III for the Sega Genesis to be the "black sheep" of the series. Personally, I'm a fan of the game but also acknowledge that it's not perfect. If you're one who thinks they can improve upon Phantasy Star III then here's your chance to finally prove it..

Aridia is a rom editor for Phantasy Star III. It has a mostly-friendly interface that makes editing incredibly easy. No messing with hex editors, decoding values, or any of that. If you can click and type then you can hack away to your heart's contentment.


Screenshots
Character Editing Weapon Editing Script Editing
Shop Editing Item Editing Enemy Editing
Level Table Editing Palette Editing Tile Editing
PSIII Easy Edition PSIII Knife Only Challenge Fun with Palette Editing


Download
Current Version - Aridia 2.1 - for Windows XP SP3, Vista, 7, and higher
Aridia 2.1 Windows executable - See the Readme file for the list of changes.
.NET Framework 4 - If you run Windows Update then you probably already have this.

Old Version - Aridia 1.6 - for Windows XP, 2000, NT
Aridia 1.6 Windows executable - See the Readme file for the list of changes.
.NET Framework 1.1 - If you run Windows Update then you probably already have this.
The Aridia 1.x branch is now frozen unless any major bugs are found.

Source Code
Source code is available on the Aridia Google Code page.

Demos
Phantasy Star III Easy Edition (IPS Patch) - 1.4: "Phantasy Star III Easy Edition" is used to test new features added to Aridia.
Phantasy Star III Alternate Font (IPS Patch): Used solely to test & demonstrate font editing.
Phantasy Star III Knife Only Challenge (IPS Patch): Just what the name implies, the only usable weapon in the entire game is the knife.




Documentation
Tutorial
Aridia Tutorial [odt] [pdf]

Technical Reference
Notes and source files from mr2, TheKomrade, and myself (raw PSIII hex editing info) 
Project wiki


Contributing
Aridia was not a solo effort, well the coding was but not discovering the myriad of things that can be edited. I am always looking for contributions, even small ones. If you'd like to pitch in, here are some items I'd appreciate help with:

Palette Identification - If you've seen the palette editing screen then you've noticed the large number of unidentified palettes. I'd love to track down what each one is used for. Gens KMod is pretty handy for this because it can display the palettes currently loaded. From there, it's a brute force effort to match them to one of the unidentified palettes. They tend to be grouped together so it's not extremely difficult to do, just time consuming.

Finding New Stuff to Edit - If you can figure out how to edit something currently not supported in Aridia then I can probably figure out how to add it to the UI. For example, I have a pretty good idea where the map data is stored but haven't yet deciphered how it's stored. Once that is determined, creating a screen to do the actual editing is probably the easiest part.

Testing - I'm actually quite happy to get bug reports. I'm certainly accident prone and would like to know when something isn't working or is producing a result that just doesn't seem right. All bugs are tracked here..

So what's in it for me if I contribute? I can't offer cash or fabulous prizes. You will have the honor of appearing in the credits though. There's also the satisfaction of working on what I intend to be the best ROM editor for any game. Well, at least the best ROM editor for a Phantasy Star game. Failing that, the best ROM editor for Phantasy Star III.


Support
Everything on this site is free If you've found something here to be especially helpful or entertaining please consider making a small donation, this can be done through a secure PayPal transaction. Thanks for visiting my little web page
Make a secure donation for any amount via PayPal.







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Aridia is distributed under the terms of the GNU General Public License, version 2 (copyright 2007-2011 Hugues Johnson)