Such a silly and self-confident people. We always thought that we are the only ones in the Universe We couldn't even think about being defeated. But it was too late. They have destroyed a big cities in a few hours, continuing to eliminate the entire human race. The Fortside - it's our last hope. Elite marines with unique defense buildings can stay against their army. And your goal is to lead us to victory. Build towers that will attack enemies and destroy them. Don't let enemies to pass the whole road. Also you need to upgrade your towers to kill enemies faster. Use YOUR MOUSE to control the game. Good luck!