is not officially available as a free download. While some earlier titles in the series like Tiberian Sun have been released as freeware by Electronic Arts (EA), Tiberium Wars remains a commercial product that requires purchase or a subscription. Legal Ways to Download
You can legally acquire and download the game through several reputable digital storefronts and services: Command & Conquer 3: Tiberium Wars - My Abandonware Command and Conquer 3 Tiberium Wars Free Download