To use option files in PES 2021, players need to download the files from reputable sources and then import them into the game using a specific tool, such as the PES 2021 Option File Editor. Once imported, the option file will modify the game's settings according to the changes specified in the file.

An Option File is a collection of user-created data files that override the default unlicensed content in PES 2021. Unlike mods on PC, which alter game code or executable files, Option Files work by importing images (kits, badges, manager photos) and editing data (team names, league structures, player stats) through the game’s built-in feature.

By installing an option file, you can instantly transform your game to include: Official club crests and competition logos. Authentic 2023/2024 or 2024/2025 season kits. Corrected player names, appearances, and stats. Real managers with their actual photographs.