: This signifies the file is part of a split archive . Large games are often broken into smaller chunks (part1, part2, etc.) to make them easier to upload and download. You cannot extract the game without having all the other parts in the same folder. Technical and Security Risks
Downloading individual .rar parts from third-party sites carries several "deadfalls" of its own: Deadfall.Adventures.MULTi8.part1.rar
: Official versions support cloud syncing and achievements, which pirated split-archives rarely do. : This signifies the file is part of a split archive
: Files found on unofficial "warez" or torrent sites are common vectors for trojans, miners, and ransomware. Since these files often require you to disable antivirus software to "crack" the game, they leave your system highly vulnerable. they leave your system highly vulnerable.