Age of Empires 3
Age of Empires 3 boxshot
Experience the ultimate in RTS with Age of Empires 3, witness the expansion of your empire from the battlefield to the Home City, and watch enemy buildings and units go sprawling before your cannon fire with the new physics engine. High-poly buildings and ships mean that the enemy's settlement and navy will always fall apart a different way every time, plus a high-res output with high-quality textures, individual unit shaders and high-quality water resemblance result in extremely life-like conditions,(provided an exceptional operating system). Level-up your Home City by gaining XP in the New World, do this by setting-up trade posts, allying with natives, collecting treasure, and destroying the enemy forces. This allows you to buy new shipments to send and unlock customizations to improve the look of your Home City.
P.S. Might I recommend a high-end computer to run this game, otherwise it's not as satisfying.