The Battle of Earthrealm started as a result of Shao Kahn's illegal invasion of Earth as it hadn't lost the tenth Mortal Kombat tournament. With his forces consisting of Shang Tsung, Motaro, Sheeva, Kano, the corrupted Sindel, Mileena, Ermac, Rain, Chameleon, Baraka, and Reptile, Shao Kahn the Konquerer absorbed Earthrealm and merged it with Outworld as his own and took all of the inhabitants' souls as trophies.