Jungle usually refers to a dense forest in a hot climate, such as a tropical rainforest. About 6% of the Earth's surface is classified as jungle. Jungles are vital to sustaining the ecosystems of the Earth as we know it.
Jungle or Dou Shou Qi is a traditional Chinese board game. It is a two player, abstract strategy game played on a 7x9 board. In many ways, the game resembles the western game Stratego, which may have its origin in Jungle.