If you are encountering any during an installation Share public link

The game cannot launch because essential background runtime packages are missing.

While the download size is much smaller, the installation time is significantly longer. Your computer's CPU and RAM must work hard during installation to extract and reconstruct the data into its original 30+ GB state. System Requirements for FIFA 18 on PC

Before downloading from a site, check user reviews or forum comments to verify if the file is clean, working, or contains errors like "ISDone.dll missing."

If you love the game and have the means, buy a legitimate second-hand key for FIFA 18. If you are simply testing performance before buying a newer title, use the compressed version as a demo.