Each epoch brings new technologies and units. In the Art of Conquest, a third future age, the Space Age, is available. In Empire Earth, the last two ages (Digital and Nano Ages) are set into the moderate future (at the time of release in 2001). Each of these epochs represents an age within history.

we Epochs are the ages a player passes through in Empire Earth. Empire Earth is a strategy video game developed by Stainless Steel Studios and published by Sierra On-Line.It was released on Novemfor PC.