Are you ready to stop the invasion of aliens? they are going to strike, using a certain route. Place different towers and make sure no enemy unit will pass through.
Stop the alien invasion by building different towers along their route. They are merciless and if you won't stop them, these aliens will destroy everything that we love. Are you ready to accept this new reality? Well, you still have a power to resist them and everything you have to do it to build your defence smartly.