Large games like Assassin's Creed are often split into multiple parts (e.g., part1.rar , part2.rar ) to make downloading easier.

Since downloading games from unofficial sources can be risky, What is this file?

.rar is a compressed folder. You need software like WinRAR or 7-Zip to open it. How to extract it

You generally cannot open part1 alone. You must have all subsequent parts (part2, part3, etc.) in the same folder.

Only download from reputable digital storefronts (like Ubisoft Store, Steam, or Epic Games) to avoid malware or "trojan" viruses often hidden in cracked files.

Right-click part1.rar and select "Extract Here." The software will automatically pull data from the other parts to recreate the full installer.

Ensure all parts are roughly the same size. If one is significantly smaller (except the last one), the download might be corrupted.

Before opening, run the file through a scanner like Windows Defender or VirusTotal .