Download The Last Days of the Earth
A real time strategy game that also gives you some good action throughout the gameplay seems to be rare nowadays, but if you go with The Last Days of the Earth you will not be disappointed at all. Along with the classic strategy feeling you will also have to master notions of tower defense and missile command.
You play in space and your task is to defend the Earth from alien enemies. In order to achieve this, you will have to build towers and the action will be full of fire, giving you a great experience that is unique in many ways. To earn more cash for upgrades you can harvest the debris left from enemy ships.