Sumer currently holds the record as the oldest known kingdom. It was established around the 4th millennium BCE in Mesopotamia (now the southern part of Iraq), although evidence suggests it was settled as early as the 5th millennium BCE. Gilgamesh, the Sumerian king of Uruk, is the most famous king of Sumer, in part due to his eponymous epic, and his numerous depictions in later fiction – including the popular Fate series of video games.