ArcheAge is a free to play, sandbox-style fantasy MMORPG. Play as one of two factions, or as an outcast of society. Make your mark through crafting, trading, crime, or waging war! The expansive world allows you to create player housing, farms, castles, and more to claim territory; fight on land, sea, and air; and much more.
Official Site: http://www.trionworlds.com/archeage/en/
Minimum System Requirements
OS: Windows XP SP3, Windows Vista , Windows 7.
CPU: Intel Core 2 Duo.
Memory: 4GB System RAM.
Graphic Card: GeForce 8000 512MB or Radeon HD 4000 512Mb.
Create Your Own Character Class: From a list of 10 abilities, choose any 3 to make your character class.
Organize Expeditions: to safely explore the Land of Origin.
Establish Your Own Country: Come to own a piece of the Land of Origin, where you can build your own castle.
Build Your Own House: Choose from various sizes and types, for your personal use, or to use as a public shop.