As the first line of defense, you must bring down everything in front of you to ensure victory. You have been equipped with four guns, including an anti-aircraft gun to assist you in trouble.
Find a secret package left on the North Pole and take it to the right place. There's a mini map and the hint arrow to guide you. Watch out for police cars which will bump into you to prevent accomplishing your mission.
Stop the invasion before the enemy reaches our cities! Alien life forms have been detected and our army has mobilized its defensive tower forces to protect us.
Pirates have stumbled upon your beautiful island and want to take over your fort. Defend your fort by firing cannons at them while upgrading and adding more cannons. Let those pirates know who owns this island!