A high-quality option file (often referred to as a patch) rectifies every licensing oversight. Here is how a "better" option file improves the experience:

Because those games are designed as "card-collecting casinos," not simulators. EA Sports FC 25 has 50,000+ real names, but it forces you into Ultimate Team. PES 6 with a real names file offers:

An Option File (often abbreviated as OF) is a saved game data file used by the PES series. It acts as a configuration database that stores team names, player appearances, stadium assignments, and emblem graphics. Unlike modern games where updates are patched automatically via the internet, PES 6 relies on the community to manually overwrite the default data.