"Japanese warships and Korean Turtle Ships do battle in this rocky sea."—Map description
Sea of Japan (East Sea) is a Real World random map introduced in Age of Empires II: The Conquerors. It depicts the area around the East Sea, including the Korean Peninsula, the mainland north of it, and the Japanese archipelago.
The map is very versatile with a strong naval focus. As the entire Japanese archipelago can be attacked from the sea, so having a strong navy is indispensable, especially for players starting on it. The land is covered with little forests which allow easy walling.
Pine and bamboo forests grow all over the map, inhabited by Wolves, Deer, Wild Boars, and Sheep. The terrain is mostly grassy, but there are drier patches all over the map as well. There is also quite some elevation on the map, on the mainland as well as on the island.