Civilization Online developed by XL Games and published by Take-Two Interactive Software is an MMORPG that revolves around the Civilization franchise. As opposed to taking on a whole nation to run yourself, you'll be working with other players as an individual person strengthening a civilization together. Depending on your choices, you may be great a researching new technologies, crafting items, sparring against other nations, construction, and more. In a dynamically changing world, make your impact how you choose.
It hasn't been decided yet, but XL Games is currently leaning toward free to play.