Since the original publisher, Mad Doc Software, no longer exists, you won't find official "giveaways" directly from them. Here are your safest options:
Hmm, I should check if there are any legal free ways to get the CD key. Maybe the publisher has promotions or giveaways. But as of now, I don't recall any such promotions. The main versions of Empire Earth 3 are available on platforms like CDKeys, but those are paid. Maybe the user is looking for a free trial, but the game doesn't have one. Empire Earth 3 Cd Key Free
: You can buy "Empire Earth 3" from online stores like Steam, GOG, or Amazon. When you purchase the game, you'll receive a CD key that you can use to activate and play the game. Since the original publisher, Mad Doc Software, no