Travel American Mahjong
If a mental challenge is what you want, a mental challenge is what you'll get from the ancient game of Mahjong. Often called the "game of a hundred intelligences" because of its much needed concentration, Mahjong is a game that's over two thousand years old. It is said to originate in China, played in the court of the King of Wu. This set is great for travel, with its black case for storage and folding wood racks!
