Introduction

Open Edit → Animations to browse DATA/GLOBAL/ANIMATION.PAK. The Edit Animations window works like the UI Editor: a searchable list of archive entries (path + size). There's no animation authoring UI here — only export, import, replace, and delete of the raw files in the PAK. Writes go straight back into the archive.

Saving changes closes Alien: Isolation if it's running, so the game isn't locking the archive.

Important Limits

This tool only extracts and repacks raw animation data. The files inside ANIMATION.PAK are compiled into game-specific formats that OpenCAGE does not make editable or interchangeable with common DCC/export pipelines.

In particular, Havok data carries extra header information beyond a plain Havok file, and animation sets are not yet supported for editing. Treat exported bytes as opaque archives for inspection or advanced reverse engineering — not as ready-to-edit animation assets.

Using the Editor

The list shows every path in the archive. Use the search box (and Search, or Enter) to filter by path. Select a row to enable the action buttons.

Export & Replace

Select a file → Export Selected → pick where to save it.
Work with the raw file externally only if you understand the compiled format (see Important Limits).
Back in Edit Animations, select the same archive entry → Replace Selected → choose your file.

Replace writes into ANIMATION.PAK immediately. OpenCAGE does not validate content.

Import, Delete & Export All

Import New File — pick a file from disk, then set the Entry path inside the archive. If that path already exists, you're asked whether to overwrite.
Delete Selected — removes the entry after confirmation.
Export All — dumps every entry into a folder, preserving relative paths under the archive.

Import and delete also save the PAK immediately (and close the game if it's open).

Animation Trees

Within the animation data are animation trees — a script-like system for contextual animation (choosing and blending clips based on game context). Support for editing animation trees in OpenCAGE is upcoming; the current window does not provide a tree editor, only raw PAK entry access.