The file is a compressed archive containing a "facepack" mod, most likely designed for the Football Manager (FM) video game series. These mods are created by community developers (like "FJR") to replace the generic or missing player portraits in the game with high-quality, real-world images. The Role of Facepacks in Digital Realism
Need help getting facepacks into the game. : r/footballmanagergames
These files are typically large, often reaching dozens of gigabytes as they include images for thousands of players across hundreds of leagues. To use them, players must: