arcdEx

arcdEx is a Linux command-line utility for examining Defold game files. It is best suited to developers, mod researchers, and archivists who need to inspect a Defold build without a full editor. Its specialized extraction workflow is useful for compatible archives, but format and encryption boundaries make it a poor fit for broader game-asset management or archive editing.

Overview

The tool centers on Defold’s .arcd archives and their companion .arci index and .dmanifest manifest files. You give it an archive, and it guesses the paths to those associated files, matching Defold’s expected layout rather than asking you to configure a general-purpose archive project. It can list archive contents, extract files, and process batches from the command line.

Distribution is a Java archive launched with java -jar arcdEx.full.jar. That keeps it suitable for scripted or repeatable workflows on Linux, but it is not a graphical browser or editor. The project is credited to Christian Weiske and licensed under AGPL v3. Feature requests and bug reports are disabled, while patches are welcome, so users needing an issue-driven support channel may find the project restrictive.

Key features

Archive listing and extraction

arcdEx lists and extracts files from .arcd archives, including compressed and encrypted entries. Encryption support has a decisive qualification: decryption works only with Defold’s default key. Archives protected with a different key cannot be recovered through this tool, so it is dependable for standard builds but not a universal Defold decrypter. Batch extraction and command-line operation make it practical for processing collections rather than opening files one at a time.

Textures and Lua

The utility can inspect .texturec resources and extract the textures they contain, including the Defold-related Basis UASTC and .basis formats. It also inspects compiled .luac files and can extract Lua source in cases where source is present. The README distinguishes desktop and web projects: desktop applications contain compiled Lua bytecode, while web projects up to Defold 1.3.4 contain Lua source code. That distinction matters when estimating what extraction will produce; a bytecode file is not the same as recoverable original source.

Manifest compatibility

The current fork identifies support for manifest version 5, and the original README lists versions 1 through 4. The release history includes v0.3.0 with manifest-v5 support, giving users of newer Defold builds a specific compatibility target while retaining coverage for earlier versions.

Web archive handling

When a Defold web game uses multiple .arcd files, they must be combined before arcdEx can be used. That extra preparation step is a practical constraint for web-game investigations, especially when files are collected separately.

Pricing

arcdEx is free: the arcdEx plan costs nothing. There is no paid tier, trial period, renewal charge, seat allowance, or usage quota stated. That makes it straightforward for individual developers and research projects, while providing no commercial support or expanded service tier for teams that outgrow a local command-line workflow.

Platforms

Linux is the listed platform. Running the distributed JAR also requires a Java runtime, and the documented invocation is command-line based. Users on macOS or Windows should not assume native support from the Linux listing.

Who it's for

Choose arcdEx if your work is centered on Defold archives and you want a free, scriptable way to enumerate and extract their contents. It is particularly relevant to developers diagnosing packaged resources, asset researchers examining game files, and archivists handling compatible Defold builds.

Look elsewhere if you need a visual editor, archive repacking, decryption with a custom key, or a workflow that accepts multi-part web archives without first combining them. It is also a weak match when your target is a different engine’s package format.

Pros and cons

Pros

• Focused Defold coverage: archive, manifest, texture, and Lua handling keeps the tool relevant to a specific game-engine format.
• Useful extraction scope: compressed and encrypted entries, texture resources, and Lua-related files can be listed or extracted in one utility.
• Automation-friendly: Java JAR distribution, command-line support, and batch extraction suit repeatable processing.
• No purchase barrier: the complete stated plan is free with no paid tiers or usage caps.

Cons

• Default-key encryption only: non-default Defold keys leave encrypted content inaccessible.
• No repacking: extracted files cannot be rebuilt into a modified .arcd archive with this tool.
• Preparation for multi-part web games: several web archives must be combined before processing.
• Limited support channel: feature requests and bug reports are disabled, although patches are accepted.
• Linux-focused command line: there is no listed desktop interface or platform listing for macOS and Windows.

Alternatives

For a broader category starting point, see Game Asset Extractors.

Source 2 Viewer is the better pick for Source 2 assets or for users who want a fully open-source, reverse-engineered project with Linux, macOS, web, and Windows support.

Choose SLADE3 when you need a desktop editor for Linux, macOS, or Windows rather than a Defold-specific command-line extractor; beta builds can include bugs, crashes, and unfinished features.

AssetRipper fits broader Unity-oriented extraction across Linux, macOS, and Windows, with a free tier and a $10-per-month Premium plan.

OpenKh is an alternative for its supported game formats on Linux, macOS, and Windows, provided you can use the required .NET 8.0 Runtime.

Rusted PackFile Manager is worth considering for pack-file workflows, including self-hosted or API use, on Linux and Windows.

QuickBMS is the stronger choice for a multiplatform, open-source extraction tool with broader script-driven format coverage.

UABEA offers a free option for Linux and Windows users working outside Defold’s archive formats.

Crowbar is a Windows-only free alternative for users whose files fit its supported game-tool workflow; donations are optional.

Verdict

arcdEx is a sensible choice for Linux users who specifically need to inspect and batch-extract Defold .arcd content, textures, and Lua-related resources at no cost. Its focused format knowledge and scripting-friendly delivery are the main reasons to choose it. Look elsewhere for custom-key decryption, archive rebuilding, a graphical interface, broader engine coverage, or a more active support process.