While previous Age of Empires installments have put you in the shoes of a medieval ruler, Age of Empires III gives you command of a promising European power bent on exploring and conquering the New World. As was true in previous games, the highlight of the gameplay is the strategic battles and all of the planning, building, and recruiting that goes into them. In addition to these previous strategies, you can now receive shipments from the mother land to help you in your conquest in the New World.
To quote the manual, "Spectacular combat awaits you in a world with units like rifled infantry, heavy cavalry, and tall ships bristling with cannon. You'll be captivated by breathtaking scenes of discover and power: towering European cathedrals, courageous Native Americans, and massive armies bent on destruction."
Age of Empires III was released for the PC in 2005 and the Mac in 2006.