MGS Mod Manager

A friendly, all-in-one desktop app that makes modding Metal Gear Solid Master Collection Vol. 1 on PC as easy as point-and-click.

✨ Features

• One-click install & uninstall: Flip a switch to add or remove any mod—the manager copies files, updates logs, and cleans up after itself.
• Automatic Safety Backups: Your original game files are duplicated the very first time you run the app, so you can always roll back. Ensure your files are Vanilla when first downloading.
• Live texture & 3-D model viewer: Preview characters, camos, and textures in an Helix-powered 3-D window before installing. Like how a texture looks? Make it into a mod with a few clicks.
• Camo / face-paint / box swapper: Don’t like a modder’s replacement choice? Change Snake’s camo, face-paint, or cardboard boxes in seconds.
• Guard-route editors: Create new scenarios or aid MGS2/3 Randomizer development with visual editors for *.hzx and .geom guard paths.
• Auto-download of modding tools: CtxrTool, texconv, and other helpers are fetched automatically when needed.
  

🎮 Supported games

• Metal Gear & Metal Gear 2: Solid Snake (Master Collection)
• Metal Gear Solid (Master Collection)
• Metal Gear Solid 2: Sons of Liberty (Master Collection)
• Metal Gear Solid 3: Snake Eater (Master Collection)
  

(All refer to the Master Collection Vol. 1 Steam release. Non-Master Collection titles may be added later.)

🚀 Quick start

• Download: Run the ClickOnce installer to set up the Mod Manager and tools.
• Launch: Run ANTIBigBoss MGS Mod Manager (desktop shortcut provided).
• First-run setup: Choose the suggested Documents\MGS Mod Manager and Trainer folder or a custom path for backups/mods.
• Game paths: Manually browse to game installs if Steam paths aren’t auto-detected.
• Start modding: Select a game tab and install your first mod!
  

📦 Installing mods

• Drag & drop: Place mod folders into the MGS2 Mods or MGS3 Mods directory.
• “Add Mod” button: Browse to any folder or ZIP archive.
• Mod browser: Click the cloud-arrow icon to download and install mods directly.
  

Toggle mods on/off with the Installed / Not Installed switch.

🛠️ Extra tools

• Texture/Model Workshop: Convert CTXR ↔ PNG, preview models, and send textures to GIMP/Photoshop.
• MGSHDFix & MGSM2Fix INI editors: Tweak Master Collection fixes seamlessly.
• Audio SDT Replacement: Swap songs between MG1/2 and MGS3 (e.g., use MG2’s alert theme in MGS3).
• Guard Position Changer: Reposition guards for custom scenarios or randomizer development.
  

💡 Tips & troubleshooting

• Stuck scanning for games? Go to Settings → Game Paths and browse manually.
• Undo everything: Use Restore Vanilla Files to revert to backups.
• 3D Model Viewer issues? Install GIMP and Python first.
  

Credits

• SageFantasma: Continued helped with the trainers, randomizers and all of our joint MGS2/3 MC Modding projects.
• Afevis/ShizCalev: Helped me with integrating MGSHDFix and parsing textures from the PS2 -> Master Collection.
• shalashaska/316austin316: A lot of his work helped me in understanding how to get the C# code to convert the CTXR Files into PNG Files.
• GIMP Developers: Helped me enable conversion of PNGs into DDS with mip map support.
• Python Developers: Allowed me to set up a script that enabled me to make GIMP work headlessly with GIMP's built in Python-Fu.
• CTXRTool Developer Jayveer: Enabled DDS-to-CTXR conversion.
• ANTIBigBoss (Me): Creator of the Mod Manager.
  

Donations (Optional)

• Support further development via Ko-Fi.
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