The file appears to be a compressed archive for the game Explorer of Yggdrasil . Because large files are often split into multiple "pieces" or "parts" for easier uploading and downloading, you likely need all pieces (e.g., Part 1, Part 2, etc.) to successfully extract the game.
Are you getting a (like "CRC failed" or "Password required")? File: Explorer_of_Yggdrasil_1.01_FKGI.rar ...
You only need to right-click the first file (usually .part1.rar ) and select "Extract Here" using a tool like WinRAR or 7-Zip . The software will automatically pull data from the other pieces to reconstruct the full file. The file appears to be a compressed archive
Many files hosted on community forums or sharing sites require a password. Check the source where you found the link for a password (often the site's URL). You only need to right-click the first file (usually