Defense Grid: The Awakening

After a thousand years of peace, the aliens have returned to invade once again. The only hope of stopping them is to activate the Defense Grid and drive them away, as was done before. Defense Grid: The Awakening is a tower defense game, in which you control the placement of various kinds of towers and defend against the invading aliens. The aliens come in waves, and as the game progresses the aliens become more powerful and more numerous. The game consists of a number of missions, each of which ...