XCOM.Enemy.Unknown.The.Complete.Edition is a substantial game, typically weighing in at approximately after installation, with compressed archive sizes ranging from 7 GB to 10 GB. To facilitate easier uploads to file-hosting services (such as Mega, Rapidgator, or Internet Archive) and to bypass file size limits imposed by browsers or FAT32 file systems (which cap individual files at 4 GB), distributors split the complete archive into smaller, manageable chunks.