Bronze Age Mesopotamia
Mesopotamia's golden age—or, more accurately, its bronze age—placed it at the center of culture and civilization between about 2900 and 1100 BC. That's a pretty large span of time, but it's one that certainly deserves to be explored.
Plenty of epic Biblical shit went down, like the infamous construction and smiting of the Tower of Babel, not to mention the Hanging Gardens of Babylon and other historical wonders that probably actually happened. Throw in some supernatural elements—we dare you to figure out how they grew all those plants in the middle of the desert without magic—and you've got yourself a video game.