Master FiveM MLO Creation: Blender, Sollumz & Export Guide

FiveM MLO Creation – Ever dreamed of bringing your own custom interiors to life in FiveM? Whether it’s a secret underground bunker, a lavish new apartment, or a bustling business for your roleplay server, creating custom interiors—known as MLOs (Map Linked Objects)—is one of the most rewarding skills you can learn. But let’s be honest, the process can seem incredibly daunting, especially with tools like Blender and Sollumz.

Don’t worry, we’ve got you covered. This guide is your ultimate starting point. We’ll break down the entire process, from setting up your software to exporting a game-ready asset. By the end, you’ll have a clear roadmap to create FiveM MLO interiors that will blow your players away.

Key Takeaways

Sollumz is Essential: The Sollumz plugin for Blender is the key that unlocks GTA V asset creation, allowing you to work with native formats and shaders directly in Blender.
Collisions are Crucial: Your MLO is useless if players can walk through walls. Creating accurate, yet simple, collision models (YBN files) is a non-negotiable step.
Optimization Matters: Portals and rooms are not just for looks; they are critical for performance, telling the game when to render or hide parts of your interior to prevent lag.
The Workflow is Key: A structured approach—Model > Texture > Collide > Portal > Export—will save you countless hours of frustration. This Blender Sollumz workflow is the industry standard for a reason.
Testing is Everything: Always test your MLO on a local server before deploying it to a live environment to catch bugs, collision issues, and visual glitches.

What Exactly is a FiveM MLO?

In the world of GTA V modding, an MLO is a special type of map object that allows you to create fully functional interiors. Unlike simple prop placements, an MLO properly handles occlusion (hiding the outside world when you’re inside), lighting, and player collision within a confined space. It’s the magic that lets you walk into a building without seeing the entire city load inside it.

Creating one from scratch gives you complete creative freedom to build unique experiences for your server, from custom player housing like the Richman House to complex facilities like the St Fiacre Hospital.

Essential Tools for Your MLO Creation Journey

Before you dive in, you’ll need to gear up with the right software. All of these tools are free and are the community standard for MLO development.

Blender (Latest Version): The powerful, free 3D modeling software where you’ll do most of your work.
Sollumz (Plugin for Blender): This is the most important tool. It’s a Blender plugin that adds support for creating and editing GTA V file formats like .ydr, .ydr, and .ybn.
OpenIV: A must-have for browsing GTA V game files. You’ll use it to extract textures and get references for your models.
A Code Editor (e.g., VS Code): For creating the simple fxmanifest.lua file needed to make your MLO a functional FiveM resource.

The Blender Sollumz Workflow: A Step-by-Step Tutorial

Ready to get your hands dirty? This section is a complete FiveM MLO creation tutorial. We’ll walk through the fundamental steps from a blank canvas to a working interior.

Step 1: Setting Up Your Blender Environment

First things first, you need to prepare Blender. Download and install the latest version of Blender, then head to the official Sollumz GitHub page to download the latest release. In Blender, go to Edit > Preferences > Add-ons > Install and select the Sollumz ZIP file. Once you enable it, you’ll see a new “Sollumz” panel on the right side of your 3D viewport. Your environment is now ready!

Step 2: Modeling Your Interior

This is where your creativity comes to life. Start modeling the visual components of your interior—the walls, floors, ceilings, and static details.

Best Practices:

Keep it Simple: Game models need to be optimized. Avoid excessive detail (polygons) that won’t be noticeable in-game. Use clean geometry.
Real-World Scale: Model everything to a realistic scale. A standard GTA V door is roughly 1 meter wide and 2.1 meters high. Use the default Blender cube (2x2x2 meters) as a starting reference.
Separate Objects Logically: Keep floors, walls, and key details as separate objects in Blender. This makes texturing and collision creation much easier later on.

Step 3: Texturing with Sollumz Shaders

To give your model its look, you’ll need to apply materials and textures. With Sollumz, you can use GTA V’s native shaders.

In the Sollumz panel, create a new Sollumz Material.
Use OpenIV to find a texture you like in the game files (the `.ytd` files) and export it as a .dds or .png file.
In Blender, add this texture to your material.
Assign the material to your model’s faces.

Getting textures right is a huge part of making an MLO feel like it belongs in the game world. For inspiration on professional texturing, check out the detail in assets like the Rockford Luxury Autos showroom.

Step 4: Building Your Collisions (YBN)

This is arguably the most critical and often frustrating step. The collision model (a .ybn file) is an invisible, simplified version of your interior that tells the game where players can and cannot go.

Duplicate Your Model: Create a copy of your visual models (walls, floors, etc.) and move them to a new collection named “Collisions.”
Simplify Geometry: Your collision mesh should be extremely simple. A flat plane for the floor, simple cubes for walls. Remove any small details like trim or windows. The fewer polygons, the better for performance.
Convert to Collision: With a simplified mesh selected, go to the Sollumz panel, select “Create Bound,” and choose “Bound Geometry.” This turns your mesh into a proper collision object.

A poorly made collision will result in players falling through the floor or getting stuck on invisible objects. Take your time here!

Step 5: Portals and Rooms (YTYP)

This part tells the game how to handle your MLO as an interior space. A “Room” defines a space (e.g., “Living Room”), and a “Portal” defines the opening between rooms (e.g., a doorway). This system allows the game to unload rooms you aren’t currently in, saving a massive amount of resources.

In the Sollumz panel, create an MLO object type.
Add “Rooms” to it and position them to encompass the spaces you’ve built.
Add “Portals” in the doorways or openings that connect these rooms. This is crucial for performance.

For a great example of a simple but effective structure, you can start with a Free Apartment Shell to see how the basic room and portal setup works.

Step 6: The Ultimate MLO Export Guide

You’ve modeled, textured, and set up your collisions. It’s time to export! The mlo export guide is straightforward with Sollumz.

Select Your Archetype: In the Sollumz panel under your MLO object, click “Auto-Create” under Archetype. This sets up the main definition.
Export Drawable (YDR): Select your main visual models and export them as a .ydr file. This is your visible building.
Export Bounds (YBN): Select all your collision objects and export them as a .ybn file. This is your collision.
Export Archetype (YTYP): Select your MLO archetype in the Sollumz panel and export it as a .ytyp file. This file links everything together.

Putting It All Together: Streaming Your MLO

With your files exported, you need to create a FiveM resource to load them into the game.

Create a new folder (e.g., `my-mlo`).
Inside, create a `stream` folder and place your .ydr, .ybn, and .ytyp files in it.
Create a file named fxmanifest.lua in the main folder.

Add the following code to your manifest:

fx_version 'cerulean'
game 'gta5'

this_is_a_map 'yes'

That’s it! Drop this folder into your server’s `resources` directory, add `ensure my-mlo` to your `server.cfg`, and start the server. If you’re not sure how to set up a testing environment, check out our guide on how to create your own FiveM server.

Conclusion

Congratulations! You now have a solid understanding of the complete process to create FiveM MLO interiors. While this guide covers the fundamentals, MLO creation is a deep and complex art. It takes practice, patience, and a lot of testing to master the Blender Sollumz workflow.

Don’t be discouraged if your first attempt isn’t perfect. Keep experimenting, learning from the community, and refining your skills. And if you need high-quality, game-ready interiors right now, you can always explore professionally made options on our shop. From intricate criminal hideouts like an Illegal Mechanic Chop Shop to essential public services like our Free Pillbox MLO, there are tons of assets to enhance your server and inspire your next big project.

Now go on and start building the FiveM world you’ve always imagined!