Once you master the basics, you can use the PES 2021 BAL Career Editor to unlock hidden game modes.
The tool is designed for function, not beauty. The interface is a grid of numbers, drop-down menus, and hex-like values. For a casual player, it can be intimidating.
Verdict: It’s a power-user tool. Expect a learning curve, but there are dozens of community-written guides.
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Download and run the PES 2021 BAL Editor.exe. Do not run PES 2021 at the same time. Click "File" -> "Open" and select your BAL00000000 file. pes 2021 bal career editor