Stand in the way of the enemy and snipe the soldiers to prevent them from causing serious damage to your base. You will be faced off against soldiers carrying grenades, automatic weapons, even trucks and tanks fully equipped with lots of fire power! As you destroy enemies, you will gain cash which you can use to purchase new guns, upgrades, walls etc. or to call in for assistance. The game saves your progress after you successfully defend a base for 10 days. Hold your ground at each base for 10 days and you will get your chance to move to the next base. Save all your bases to become a national hero! If the enemy manages to destroy your base, you will have to return to day one. Good luck!