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OpenAssetTools

On the record

Affiliation
The project states that it is not endorsed by or affiliated with Activision, Treyarch, Infinity Ward, or their descendants.openassettools.dev · read 9 Oct 2026
Asset creation
The site says users can create custom assets and mods for supported games.openassettools.dev · read 8 Oct 2026
Asset extraction
The Unlinker loads supported games’ fastfiles and can dump a subset of their assets to disk, depending on the game.openassettools.dev · read 8 Oct 2026
Asset formats
Unlinker dumps assets in formats intended to be close to the original game formats or in commonly used formats.openassettools.dev · read 9 Oct 2026
Build requirements
Building requires Git and Premake; the Windows guide specifies Visual Studio 2022, while the Linux guide specifies g++ and multilib for 32-bit builds.openassettools.dev · read 9 Oct 2026
Command line
The Linker and Unlinker both provide command-line usage, and the Unlinker can also be used by dragging and dropping a fastfile onto it on Windows.openassettools.dev · read 8 Oct 2026
Compatibility
The project aims to be compatible with existing formats and add support for previously unsupported titles.openassettools.dev · read 8 Oct 2026
Create fastfiles
The Linker builds custom fastfiles and can reuse assets loaded from existing zones.openassettools.dev · read 9 Oct 2026
Extract assets
The Unlinker can load supported fastfiles and dump a subset of their assets to disk, depending on the game.openassettools.dev · read 9 Oct 2026
Fastfile building
The Linker builds custom fastfiles and can reuse assets loaded from existing zones, although disk-readable asset types vary by game.openassettools.dev · read 8 Oct 2026
Legal note
The site says extracting game files does not grant rights to their contents, which remain with their respective owners.openassettools.dev · read 8 Oct 2026
Legal rights
The guide says extracting game file contents does not grant rights to those contents, which remain with their owners.openassettools.dev · read 9 Oct 2026
License
The source code is licensed under GPLv3.openassettools.dev · read 8 Oct 2026
Limits
The project is incomplete; only a subset of assets can currently be dumped or read from disk, depending on the game.openassettools.dev · read 9 Oct 2026
Linux build
Building on Linux requires Git and g++, with multilib needed for 32-bit builds on a 64-bit machine.openassettools.dev · read 8 Oct 2026
Linux use
The Linux build guide uses generate.sh to create make files, followed by make or the provided release or debug scripts.openassettools.dev · read 9 Oct 2026
Project files
Zone project files are text-based and use comma-separated key-based notation with optional comments and C-like preprocessing.openassettools.dev · read 9 Oct 2026
Project limits
The guide describes OAT as incomplete and says it currently provides only a small subset of modding features.openassettools.dev · read 8 Oct 2026

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