Authentic campaign files for Age of Empires II usually end in extensions like .cpn , .scx , or .scn . If you download a ".zip" file, it should only contain these file types and perhaps a text readme. Installation (General Guide)
Drop the downloaded campaign file into that folder. The Trasamire Campaigns Free Download
Only download from established community hubs like heavengames.com or ModDB . These sites have been the standard for decades. Authentic campaign files for Age of Empires II
Avoid any site that asks you to complete a "survey," download a separate "installer" (.exe), or provide a phone number to unlock the file. These are common signs of malware or phishing. These are common signs of malware or phishing
Go to the "Custom Campaigns" menu in-game to play.
Searching for a free download of typically points toward a specific campaign or module for the classic real-time strategy game Age of Empires II (likely the Age of Kings or The Conquerors editions).