Earth 2150: The Moon Project is a sequel to the real time strategy game Earth 2150.While the game is in fact a stand-alone game many consider it an expansion pack because it does little more than provide new missions and weapons. The story takes place alongside the original game's story. The Moon Project was released in 2000 by Strategic Simulations Inc. Earth's final war is in full swing. The United Civilized States Eurasian Dynasty and the Lunar Corporation fight over what is left of the world's resources in order to escape the blue planet before it is destroyed. Meanwhile on the Moon the Lunar Corporation discovers the remnants of an alien tunnel system. In it they find the plans for an orbital super weapon with the power to attack the Earth from the Moon. While beginning the process of building the weapon code named "Sunlight" a United Civilized States army appears ready to try to stop them. It is up to the player to decide how it will play out and who will win.