Shang Tsung not only turns against and defeats both Kintaro and Shao Kahn, he also takes over their rule of the Outworld. With Shao Kahn's armies at his command, he finally unbalances the Furies, and weakens the dimensional gates between the Outworld and the Earth Realm. Along with his elite group of sorcerers he uses this weakness to march a never ending horde of demons onto the Earth and doom its inhabitants to eternal darkness. Have a nice day.