This is a Shooting game with strategy elements. You need to defend a fortress from waves of airborne enemy units. You can build different types of turrets and use them one at a time. Some turrets require ballistics controls. Other take a lot of time to reload, and some cause lighter damage. The position of each turret is also important, because the are the turret can cover, depends on it. You also can build defensive structure that will not attack the enemy directly, but will improve the parameters of offensive turrets. Once you build everything. you start shooting. Use your mouse to aim and shoot. Choose the turret clicking on it or pressing its hotkey (1-3).
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