Sites offering a "highly compressed PC game" for Call of Duty 3 are generally deceptive or unsafe. Because a native PC version does not exist, these downloads are typically one of the following:
There is of Call of Duty 3 . Released in 2006, it remains the only major entry in the franchise to never receive a native PC port. The Reality of "Highly Compressed" Downloads Call of Duty 3 Highly Compressed PC Game