Assuming you have the correct password (e.g., gametrex.com ), here’s how to extract it safely:
How safe is it to use winrar's password function to protect sensitive files
The standard password for extracting WinRAR archives downloaded from www.gametrex.com Common Applications
If you absolutely must use Gametrex, stick to the password gametrex.com , scan every executable with VirusTotal, and never disable your antivirus.
Downloading large games can be risky, but unlocking them shouldn't be a mystery.