v1.0.0

Backyard Baseball PS2 Editor v1.0.0

This is the first stable release of the focused Backyard Baseball editor for PlayStation 2.

Download and requirements

Download Backyard-Baseball-PS2-Editor-v1.0.0-win-x64.zip, extract it, and run
Backyard Baseball PS2 Editor.exe. The release is self-contained for Windows x64 and does not require
a separate .NET installation.

Use your own extracted Backyard Baseball (USA) game files. ImgBurn is required only when rebuilding an
ISO from inside the editor.

Highlights

• Edit all retail and clone player stats, names, identity fields, pitch ratings, biographies, portraits,
  animated selection images, and textured 3D player appearances.
• Edit stadium lighting, cameras, collisions, ambient objects, paths, animations, and the actual 3D
  home-run boundary with a joined textured preview.
• Tune 285 gameplay and physics values or use presets for ball size, bounce, rolling, hitting, bunts,
  power-ups, catching, and complete game styles.
• Reconfigure teams and divisions and edit all 40 season schedule templates.
• Preview and edit RenderWare animations and EVT lip-sync/facial timelines on textured player models.
• Browse and export RenderWare DFF/RWS models, stadiums, embedded textures, PS2 audio, and raw DATA.MET assets.
• Unlock game content and enable recovered retail developer options through guarded executable patches.
• Rebuild a playable modded ISO directly from the extracted game folder.

Compatibility and safety

DATA.MET browsing and structured archive editors target the retail USA game data. Executable patches
specifically require the verified USA SLUS_208.65; another revision or a conflicting instruction patch
is rejected before writing.

DATA.MET, executable, ISO, and exported-save changes create timestamped backups where applicable.
Replacement textures, VAG audio, and PSS video are validated before import.

The release includes a .sha256 file beside the ZIP so the downloaded archive can be verified with
PowerShell:

Get-FileHash .\Backyard-Baseball-PS2-Editor-v1.0.0-win-x64.zip -Algorithm SHA256

Documentation

Detailed format notes and recovered executable addresses are available in the repository's docs
directory. Start with the main README for the extraction, editing, executable-patching, and ISO rebuild
workflow.

v0.2

Added

• File Structure Info viewer (View → File Structure Info) - displays MET file layout, header details, validation results, and address mappings
• METFileStructure class for centralized structure tracking and validation
• Unsaved changes check when exiting application with Yes/No/Cancel dialog
• File type filtering - only human-readable text files are displayed in text editor
• Hex view toggle (View → Hex View) for all file types with actual MET file offsets
• Status bar with dynamic messages and unsaved changes indicator
• Window title now shows file name and unsaved changes marker (*)
• TreeView context menu for import/export/save operations
• Dynamic file resizing with automatic backup/restore on errors

Changed

• Updated all file encoding from ASCII to UTF-8 for international character support
• Updated MET file parser to use structure-based reading instead of pattern matching
• Changed text editor from Enabled/Disabled to IsReadOnly for better scrolling support
• Improved text file display by hiding leading unprintable characters while preserving them on save
• Enhanced file import/save workflow with resize prompts and confirmation dialogs
• Refactored TreeView hierarchy building for clearer file organization

Fixed

• Fixed PictureBox image disposal memory leaks
• Fixed views not clearing when switching between file types (text/image/binary)
• Fixed hex view triggering false unsaved changes flag
• Fixed hex view not clearing properly when toggling off
• Fixed hex view scrolling disabled issue
• Fixed blocks/squares appearing in text files caused by unprintable control characters

v0.1

The PS2 .MET File Editor is a tool designed to open, view, modify, import, and export files within the .MET files of Backyard Baseball 2004 for the PlayStation 2. This program provides an interface to access and edit the game's data files, enabling customization and modification of the game's content.

Features

• Open .MET Files: Easily open .MET files to explore their contents.
• View Files: Browse and view files within the .MET archive.
• Modify Files: Edit the contents of files within the .MET archive.
• Import/Export Files: Import new files into the .MET archive or export existing files to your computer.
• Save Changes: Save modifications to the .MET file, ensuring your changes are applied.
• Repack ISO: Guidance on repacking the modified .MET file back into the game ISO for use.

Full Changelog: https://github.com/primetime43/PS2-MET-File-Editor/commits/v0.1