BCRES File – What is .bcres file and how to open it?

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BCRES File Extension

Nintendo 3DS Game Model – file format by Nintendo

BCRES (Nintendo 3DS Game Model) is a proprietary file format developed by Nintendo used to store 3D models in Nintendo 3DS games. It contains information about the model’s geometry, materials, and textures.

BCRES File Overview

A BCRES file, short for Binary Code Resource Extended Structure, is a specialized data container used in games developed for the Nintendo 3DS handheld video game console. It serves as a repository for various model, animation, texture, and other graphical assets that define the visual appearance of in-game objects, characters, and environments. BCRES files play a crucial role in rendering the intricate and detailed graphics found in 3DS games.

The BCRES file format was developed by Nintendo exclusively for use on the 3DS platform. It is a proprietary format, meaning that its internal structure and data organization are not publicly available. However, certain aspects of the format have been documented and analyzed by the modding and homebrew community, enabling the development of tools and techniques for extracting, editing, and modifying BCRES files.

Using the 3DS Tool Suite

To open a .BCRES file, you can use the 3DS Tool Suite, a collection of tools for working with 3DS game files. It includes a utility called bcires.exe that can be used to extract and view the contents of .BCRES files. To do this, follow these steps:

  1. Download and install the 3DS Tool Suite.
  2. Open a command prompt or terminal window.
  3. Navigate to the directory where the .BCRES file is located.
  4. Enter the following command:


bcires -e <BCRES file> <output directory>

This will extract the contents of the .BCRES file to the specified output directory. The extracted files will be in a variety of formats, including .obj, .mtl, and .png.

Using Other Third-Party Tools

There are also other third-party tools that can be used to open .BCRES files. One such tool is ModelViewer, which is a free and open-source program that can be used to view 3D models in a variety of formats, including .BCRES. To use ModelViewer to open a .BCRES file, follow these steps:

  1. Download and install ModelViewer.
  2. Open ModelViewer.
  3. Click on the “File” menu and select “Open”.
  4. Navigate to the directory where the .BCRES file is located.
  5. Select the .BCRES file and click on the “Open” button.

ModelViewer will open the .BCRES file and display the 3D model it contains. You can use the various tools in ModelViewer to rotate, zoom, and inspect the model.

BCRES File Format

The BCRES file format is a proprietary file format used by the Nintendo 3DS video game console to store 3D game models. BCRES files contain both the geometry and texture data for a 3D model, and are used by the console’s graphics engine to render the model on-screen. BCRES files are typically compressed to reduce their size, and are encrypted to prevent unauthorized access to the model data.

BCRES File Structure

BCRES files have a hierarchical structure, with the root node of the file containing information about the overall model, such as the number of vertices and faces. The root node also contains a list of child nodes, each of which represents a separate part of the model. Child nodes can have their own child nodes, creating a tree-like structure. Each node in the tree contains information about the geometry and texture data for the corresponding part of the model.

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