These files are not mandatory for the game to function, only for higher quality or extra cinematic content. Skipping them is usually fine.

Uncheck all optional video components in the installer (e.g., "4K Videos," "Bonus Content").

This file is part of a multi-part archive ( .rar or .bin ) containing optional, high-quality video files for a game, often used in FitGirl repacks to reduce download size.

Based on common issues with FitGirl repacks, the file fg-optional-unused-videos.part06.rar (or similar .bin files) relates to optional content—specifically high-resolution, 4K, or story videos—that was not included in the main installation to save download size. Here is the "story" and solution regarding these files:

During installation, the setup may request this file even if you did not select the optional videos, or it may fail to find it if you intended to install it, leading to a corrupt or incomplete installation error. The Solution:

You must have all part files (e.g., .part01.rar through .part06.rar ) in the same folder as the setup.exe .

In some cases, such as Mortal Kombat 11, users have reported needing to manually rename specific BIN files in the installation folder (e.g., copying a generic fg-06.bin to fg-optional-4K-videos.bin ) to satisfy the installer's check.