Alien monsters will attack you in the game Tiny Towers and your task is to provide defense. Your disposal has three varieties of shooting turrets. Each has its own characteristics. Install them in positions with which the shelling will begin. As the enemy is destroyed and coin accumulation, you can modernize each turret, choosing the most necessary improvements from three options. Assess the situation and choose what you need at the moment. After several waves of attacks, you will have to meet with the boss in Tiny Towers.