Gotham Prime is under bombardment from enemy forces. Protect it as bust you can.
With its economy in ruins Imperial City has become dangerously low on resources and is on the verge of political and socio collapse. In a desperate move their supreme leader, General Un, set out to lay claim the abundance of Gotham Prime.
Without warning, Imperial City set fourth a massive attack on Gotham Prime with hopes to lay waste to all.
Use your cannon to shoot down the airships and bombs. The generators power your cannon and the city. If all the generators are destroyed the game is over. If the bombs hit your cannon the slower the it shoots.