All the pixilated robots have decided that they are angry at your base for having the best looking graphics and have launched an all out assault to destroy you. Build up your defense and deal with all the enemies who seek to kill you. Use missiles, flak cannon, flamethrowers and more to deal massive damage to the enemy. And as the waves increase so does enemy strength, so upgrade your towers to deal out even more damage. Use wall blocks and bombs to help funnel the enemy to where the majority of your forces lay in wait, so you can kill them all in single swoop.