Revenge Of The Titans
At first they came from the skies, and we repelled them with hired spaceships on a shoestring budget! Now they are back, and sending their ground troops to destroy our bases. And we still have no money! Quickly assemble a defensive position using blaster turrets, upgrades, tiny battledroids, barricades, mines, tangleweb, whilst obtaining the necessary funds by mining nearby resources as the relentless march of the Titans approaches the base. Research new technology and buildings as you defend the Earth bases throughout the solar system from the Titan onslaught.