Sb3utility Tutorial //top\\ Jun 2026
SB3Utility (often called ) is a powerful, open-source tool used primarily for modding 3D games from Illusion (like Koikatsu, Honey Select, and AI Shoujo). It allows you to extract, edit, and replace 3D meshes, textures, animations, and sound files within game asset bundles. Top Tutorials & Guides SB3UtilityGUI User Guide (Scribd) : A comprehensive Step-by-Step PDF Guide that covers isolating meshes, changing textures, and exporting/importing files for editing in tools like Metasequoia. Koikatsu Modding Preparation (GitHub) Beginner's Prep Guide explains why SB3Utility is essential for asset bundle modification and compares it to other tools like Unity Editor. Honey Select UI Modding (Video) Practical Video Tutorial demonstrating how to replace game UI elements, such as intro screens, by exporting and re-importing image files. Koikatsu Animation Workflow (Video) Technical Walkthrough on loading animation clips, setting Path IDs, and exporting animations to FBX format for use in Blender. Key Modding Workflows HongFire.com | Anime | Manga | Games | MMORPG
SB3Utility (SB3UGS) is a versatile modding tool used primarily for games developed by Illusion, such as Honey Select, Koikatsu, and AI Shoujo. It allows users to extract, edit, and create 3D assets, including meshes, textures, and animations. Getting Started with SB3Utility To begin modding, you must first obtain the correct version of the software. Download : The latest releases and source code are maintained on the enimaroah/SB3Utility GitHub . Requirements : Most modding workflows require a 3D modeling program like Blender or Metasequoia to edit exported meshes. Installation : SB3Utility is typically portable; extract the downloaded archive to a folder on your drive. Avoid installing it in protected system folders like Program Files to prevent permission issues. Interface Overview The SB3Utility GUI is divided into several functional panels: Object Tree : Displays the hierarchy of the opened file (e.g., .pp or .unity3d files). Mesh Tab : Used to view and export specific 3D models. Material/Texture Tabs : Allows for viewing and swapping the images applied to models. Renderer : Provides a 3D preview of the asset currently being edited. Core Workflow: Modifying a Mesh A common use for SB3Utility is replacing or editing an in-game accessory or garment. Using Koikatsu animation files in a Blender asset library
The Ultimate Sb3Utility Tutorial: A Comprehensive Guide to Modding Illusion Games The world of modding Japanese 3D eroge (erotic games), specifically titles developed by the studio Illusion (such as Honey Select , Koikatsu , PlayHome , and AI Shoujo ), is vast and creative. At the center of this ecosystem lies a singular, indispensable tool: Sb3Utility . Despite its unassuming name and utilitarian interface, Sb3Utility (often abbreviated as SB3U) is the "Swiss Army Knife" for these game engines. It allows users to peek inside the proprietary file formats, swap assets, fix bugs, and create entirely new content. However, for a beginner, the interface can look like a wall of confusing code. This Sb3Utility Tutorial is designed to take you from a novice to a proficient modder. We will cover what the tool is, how to navigate its interface, and walk through the most common workflows used in the community today.
What is Sb3Utility? Sb3Utility is a file viewer, editor, and converter for 3D game engines, specifically those used by Illusion. It acts as a bridge between standard 3D formats (like FBX or OBJ) and the proprietary formats used by the games (such as .unity3d , .pp , and .xa ). Because Illusion games are built on the Unity engine (for newer titles) or their proprietary older engines, the assets are bundled in specific ways that standard software like Blender or Maya cannot read directly. Sb3Utility "unwraps" these bundles, allowing you to extract meshes, textures, and animations, or inject new ones. Why You Need It Sb3utility Tutorial
Asset Extraction: Pulling a character model or a specific outfit out of a game to use in Blender or MMD (MikuMikuDance). Recoloring and Texturing: Changing the diffuse textures or normal maps of clothing items. Mesh Editing: Importing a custom 3D mesh (like a lightsaber or a pair of shoes) into the game. List Editing: Changing ID numbers so mods don't conflict with one another.
Preparation and Prerequisites Before diving into this Sb3Utility tutorial, you must have the correct environment set up. Trying to run the tool without prerequisites is the number one reason beginners fail. 1. Sb3Utility Script (The Tool Itself) You will not typically find a simple .exe installer. The tool is usually distributed as a script file (e.g., SB3UtilityScript.exe ) found on major modding hubs like HongFire or specialized Discord servers.
Note: Always download the latest version. Old versions may not support newer games like Koikatsu or Honey Select 2 . SB3Utility (often called ) is a powerful, open-source
2. Blender (Recommended) While Sb3Utility handles the game files, it is not a 3D modeling suite. If you plan to edit meshes, you need a 3D editor. Blender is the industry standard for this community. You will create your model in Blender, export it as an FBX, and then use Sb3Utility to put that FBX into the game. 3. Image Editing Software Photoshop or GIMP is required for editing textures ( .dds or .png files).
The Interface: A Guided Tour When you first launch Sb3Utility, you are greeted with a tabbed interface. It looks technical, but the layout follows a logic.
The Menu Bar: This is where you load files. You will mostly use File > Open or File > Add . The Workspace Tree (Left Panel): This displays the hierarchy of the loaded file. You will see Monobehaviours , Meshes , Textures , and Animators . The Preview Window (Central): A Key Modding Workflows HongFire
This guide assumes you want to edit project JSON or assets manually (e.g., changing variable values, fixing corrupted saves, or batch-extracting sounds).
Sb3utility Tutorial: How to Unpack, Edit, and Repack Scratch 3 Projects 1. What is Sb3utility? Sb3utility is a command-line tool (and often associated GUI versions) designed to break down Scratch 3’s .sb3 file format. Since .sb3 files are actually ZIP archives containing JSON and asset files, this utility helps you: