Empire Earth 2: The Art of Supremacy - 45 - Maasai Campaign - More Valuable than Gold Walkthrough Gameplay PC Difficulty: Hard Empire Earth II is a real-time strategy computer game developed by Mad Doc Software and published by Vivendi Universal Games on April 26, 2005. It is a sequel to the 2001 bestselling game Empire Earth, which was developed by the now-defunct Stainless Steel Studios. The game features 15 epochs and 14 different civilizations. The game has three playable campaigns: a Korean, German, and American one, as well as several other playable scenarios.