Secure your digital key or download directly from a trusted retailer like GOG or Steam.

Download the installer (GOG) or install via the Steam client.

The Enduring Legacy of Act of War: A Techno-Thriller Landmark Released in 2005 by Eugen Systems, Act of War: Direct Action

To summarize, here is the most straightforward and legal approach to obtaining Act of War: Gold Edition using a normal download link: