If you want to play the game securely and support the developers, you should use these official platforms: Crusader Kings III - Paradox Interactive

: You won't be able to access the Paradox Mods platform or the Steam Workshop, which are essential for the best game experience. Safe Ways to Get Crusader Kings III

Be very careful with files like . Based on the name and format, this is almost certainly a pirated version or a malicious file rather than a legitimate copy of the game.

: Unofficial .rar files often contain executable scripts that can infect your computer the moment you extract them. Antivirus software frequently flags these types of installers as containing trojans like "Gen:Variant".