(registered 2026-10-06, last updated 2026-10-06)

Media type name: application

Media subtype name: vnd.aethel.package

Required parameters: None

Optional parameters: version

Encoding considerations: binary

Security considerations: The .aethel file format acts as a proprietary container for the Aethel Gard MMORPG ecosystem. Files contain compressed (Zlib) and encrypted (AES) binary data payloads. File integrity is strictly validated using SHA-256 hashes within the OTA update manifest prior to client execution or unpacking. The format does not execute native code directly through the operating system autonomously and is processed exclusively by the game engine or designated updater.

Interoperability considerations: The format is natively supported and processed within the Aethel Gard software ecosystem, including Tauri-based desktop clients and Node.js/Express patch servers.

Published specification: https://docs.google.com/document/d/1G1FkQKOc2xDDc148zdh4RbLNbCwNCbUrJVe5ijHaACQ/edit?usp=sharing

Applications which use this media: Aethel Gard game client (built with Tauri) and patch distribution servers.

Fragment identifier considerations: Not applicable.

Restrictions on usage: Limited use

Additional information:

1. Deprecated alias names for this type: None
2. Magic number(s): 41 45 54 48
3. File extension(s): .aethel
4. Macintosh file type code: None
5. Object Identifiers: None

Person to contact for further information:

1. Name: Ewerson Silva
2. Email: anjsuporte&gmail.com

Intended usage: LIMITED USE

Proprietary game asset and update package container format for Aethel Gard.

Author/Change controller: Common