Outer space threatening abnormal birds that can fly in space. These birds can change the motion of the space-time continuum and cause paradoxes. To keep the normal flow of time and the safety of the matter, we have to get rid of these cosmic parasites. For this is the best suited slingshot that can hurl stones at a considerable distance. Once the bird is in the field of view, it is necessary to open fire. To get to the bird, it is necessary to restore sight and press the left mouse button.