Getting a completely free and legal full version of is tricky because the game is currently sold as Warcraft III: Reforged , which includes both the original Reign of Chaos and the Frozen Throne expansion.
Do you have from the old physical games that you'd like to try and recover? warcraft-iii-complete-edition-pc-game-free-download
: If you have a PC Game Pass subscription, you can download and install Warcraft III: Reforged for no extra cost through the Xbox app. Getting a completely free and legal full version
However, if you are looking to play the classic version or try it out, here are your official options: 1. Official Free Trial & Subscription Access warcraft-iii-complete-edition-pc-game-free-download