Feral Weapon

Easy to learn, impossible to master - the Feral Weapon is humanity's last line of defense against its tyrannic oppressors. You "control" the Feral Weapon, an out-of-control orbital cannon. You must use it to hold off the enemy forces, while firing as little as possible in order to maintain control. While not firing, the Feral Weapon constantly powers up. It has 8 power levels, with a higher power level meaning a larger area-of-effect. Whenever the Feral Weapon reaches maximum power, it fires independently and may hit one of the player's cities. Whenever the Feral Weapon fires, its power-up phase becomes shorter. Eventually and inevitably the Feral Weapon will destroy everything - but how long can you last?