There is no official PC version of Call of Duty 3 . Unlike other major installments in the franchise, Call of Duty 3 (2006) was released exclusively for consoles, including the Xbox 360, PlayStation 3, Wii, Xbox, and PlayStation 2

Call of Duty 3 remains the only major numerical entry in the franchise that was never released on PC. It was developed by Treyarch and released in 2006 exclusively for consoles, including the PlayStation 2, PlayStation 3, Xbox, Xbox 360, and Wii. The Risks of "Highly Compressed" Downloads

Call of Duty 3 is a first-person shooter video game developed by Treyarch and published by Activision. It was released in 2006 and is the third main installment in the Call of Duty series. The game is set during World War II and follows the Allied invasion of Normandy.

Original Xbox and Xbox 360 (also playable on newer Xbox consoles via backward compatibility). Why "Highly Compressed PC Downloads" are Misleading No Native Port:

Stay safe, respect developers’ work, and enjoy WWII gaming through proper channels.

Since no official port exists, here are the legal and safe ways to experience the game on your computer.