Description

The YTYP Archetype Creator is built for modders who create MLO interiors and prop archetypes for GTA V directly inside Autodesk 3ds Max. It provides a complete workflow for building, importing, and exporting YTYP files, from simple prop definitions to full MLO interiors with rooms, portals, and entities.
Powered by CodeWalker’s .ytyp.xml format, the tool generates clean, game-ready archetype data and can import vanilla YTYP files while preserving existing extensions such as doors, light effects, and audio emitters.

Features
Build full MLO interiors in minutes: rooms, portals, and entities, all inside 3ds Max.
One-click portals: select 4 vertices and the tool creates the portal in the correct GTA order automatically.
See what you build: two-color portal planes (green = in, red = out) and room boxes update live in the viewport as you edit.
Entities per room, just like CodeWalker, created straight from your scene selection with exact transforms.
No more mystery numbers: room, portal, and entity flags as named checkboxes (Cast Shadows, One Way, Freeze Peds, and more).
YMAP Exporter: place your MLO in the world with auto-computed extents and exit portals.
Vanilla-safe importing: edit existing YTYP files without losing doors, lights, or audio extensions.
Supports BASE, MLO, and TIME archetypes with Sollumz-compatible rendering properties.
Includes a detailed HOW TO USE.txt guide covering the full workflow step by step.

How to Use
Open the tool from the Utilities tab in 3ds Max and click New YTYP. Your archetype is created automatically.
For an MLO: add your rooms (start with Add Limbo), then select 4 vertices on a wall opening and click Auto Create to build a portal in the correct GTA order.

Select a room in the Entities dropdown, select your props in the viewport, and click From Selection to add them as entities with their transforms.
Export your .ytyp.xml from the File tab, and optionally export a .ymap.xml to place the MLO in the world.
Import both files into your RPF archive using CodeWalker.
Done! Your interior is now ready to use in GTA V.

For a detailed explanation of every step, from installation to exporting your YTYP and YMAP, read the included HOW TO USE.txt file. It covers the full workflow, common problems and their fixes, and tips for building your first interior.

Installation
Extract the downloaded ZIP file.
Drag install.ms into the 3ds Max viewport.
That’s it, you will find it in the Utilities Menu.

Requirements
Autodesk 3ds Max 2021-2026.
CodeWalker

MLO Builder Workflow
The tool is designed around a fast, viewport-driven workflow: rooms and portals are captured directly from your model’s vertices, entities are created from your scene selection with their exact world transforms, and everything you edit updates live in the viewport so you always see what you’re building. Room attachments, portal counts, exit portals, and GUIDs are handled automatically so the exported file just works.

Issues & Support
This tool is still actively being improved, so you may occasionally run into bugs or unexpected behavior. If you encounter any issues, have suggestions, or need help using the tool, feel free to contact me on Discord. Your feedback helps improve the tool and future updates.

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Authors: EscobarV Created by Escobar with assistance from Claude AI. Inspired by Rockstar Games’ GTA V archetype system, Sollumz and CodeWalker by dexyfex.

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