This is a tactical game where you have to be patient, quick as well as intelligent to win the game! You have to build up your city by constructing factories and houses, train your troops in the barracks, build surveillance towers and also the boundaries to defend your progressive city from the attacking green brigade. Don't forget to read the help instructions in the game before you proceed. Use your Mouse to select the different options in the game and follow the instructions. Left Click to shoot down the enemies. You earn money for killing the enemies as well as running factories, which you can use to upgrade your city infrastructure.