The format is based on chunks, where each section of data is embedded in a block containing a chunk identifier and the length of the data and the data itself. Use ctrtool or GodMode9 to read and extract data from CIA files.ģds is a binary file format.

CIA files are commonly used for installing gamecard updates. It contains game content, metadata, and a ticket. While the 3DS format aims to provide an import/export format, retaining only essential geometry, texture, and lighting data, the related MAX format also contains extra information specific to Autodesk 3ds Max to allow a scene to be completely saved/loaded.Ī CIA file is a CTR Importable Archive used to install games to a Nintendo 3DS handheld device. Since 1990, it has grown to become a de facto industry standard for transferring models between 3D programs or storing models for 3D resource catalogs. It was the native file format of the old Autodesk 3D Studio DOS, which was popular until its successor replaced it in April 1996. 3DS is one of the file formats used by the Autodesk 3ds Max 3D modeling, animation, and rendering software.

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