Empire Earth is quite the epic game. Going through the ages and exploring the units that come from each of them is a blast. From the ancient times to the future you will use and battle with units such as ancient soldiers to mechs and robots. EE proved to be above the rest at its time with great features such as random maps and large (and I mean large) maps. The AI will provide a decent challenge and you will keep coming back for more as the game is easy to get the hang of. It definitely fits with classics such as Age of Empires and Rise of Nations.