Simplify the following text for a Grade 6 native English-speaking person.
Original: The Age of Empires games belong to the real-time strategy genre , with the exception of the turn-based `` Age of Empires : The Age of Kings '' and Age of Empires : Mythologies for the Nintendo DS .
Simplified: These are : Age of Empires , Age of Empires II ( also called Age of Kings ) , and Age of Empires III .