X Rebirth Catalog Tool 1.10 !link! ◆

The X modding community is a fantastic resource. If you get stuck or want to learn more advanced techniques, these are the best places to look:

Using excessive compression levels on large asset files.

Version 1.10 brought enhanced support, including the ability to handle catalog formats from earlier X games. X Rebirth Catalog Tool 1.10

The catalog index is mismatched with the data payload size.

Have you already located your ?

Understanding load order is crucial to avoid mod conflicts. The virtual file system in X Rebirth and X4: Foundations follows a specific priority:

X Rebirth stores its assets—including XML scripts, textures, 3D models, and audio—inside compressed archive files with .cat (catalog) and .dat (data) extensions. The game engine reads these files sequentially to load assets. The X modding community is a fantastic resource

Recompress modified loose files back into standard game-readable formats.

Ensure your file paths inside the tool use forward slashes ( / ) rather than backward slashes ( \ ) to maintain Linux and Steam Deck compatibility. The catalog index is mismatched with the data payload size

If your mod involves changing text or stats, we can look at the syntax for used by X Rebirth.