The original game can be quite large, but a repack often reduces the initial download size to roughly 2 GB to 3.3 GB , expanding to around 7 GB after installation.
After installation, many players download additional "megapacks" for 2D/3D kits and player faces to improve the visual experience, which can be found on community sites like FMSlovakia . Troubleshooting
These versions usually include "Multi17," supporting 17 different languages that can be adjusted in the game menu. How to Install
Most repacks for FM21 are based on version v21.4.0 , which was one of the final stable updates for the game.
If the game crashes upon launch, it is often due to custom data. Sports Interactive recommends deleting the "Preferences" and "Caches" folders in your AppData directory to resolve this.
Use a tool like WinRAR or 7-Zip to extract the .rar file.