Uncharted Waters Online: Gran Atlas

Uncharted Waters Online (Japanese: 大航海時代 Online; lit. "Great Age of Sail" or "Age of Great Voyage") is an MMORPG set in the Age of Exploration, with the English version published by Papaya Play. It features over a hundred different sailing ships and an open world based on real Earth geography, with players engage in many activities such as combat, exploration, and trade on both sea and land while interacting with each other. It has a sandbox style game play and skill based character development. The game requires monthly subscription fee in Japan but the international server is free to play.