Age of Empires: Mythologies is a spin-off of the main Age of Empires series and was released for the Nintendo DS in 2008. It's a turn-based strategy game with elements of historical and mythological warfare. Players can choose from three different civilizations - the Greeks, Egyptians, or Norse - each with its own unique units, technologies, and gods. Gameplay involves managing resources, building armies, and conquering enemy territories while taking advantage of mythical creatures and divine powers.