Defend against the robo-bugs that are trying to take over your base. Unlock and upgrade new areas and special weapons. Collect enough exp points to get more powerful weapons.
An honest cop's wife and child have been murdered by mobsters whom he had put behind bars. Following the incident, he has lost his faith in the system which couldn't protect his own family. In his revenge, there is no way stopping him.
The mafia war has begun. You have to protect your territory against the enemy gang that tries to take over. Bring your armed men to the roofs to shoot and destroy every outsider moving in on your turf.