Kong Boatu is back, and the nomads are attacking again. Building the Great Wall of China 2 takes the original's time-management formula to four new environments—golden plains, snowy mountain cliffs, sun-baked desert, and beyond—across forty levels. Buildings can be upgraded for speed and efficiency. Three resources to gather: food, stone, and the new addition, coal. More than fifteen historical collectibles are scattered throughout, each with a note about its real role in Chinese history. The wall must be finished before the nomads break through.