Jim is a scientist who quite often spent the evenings observing the stars in his observatory. Once he noticed that one of them began to increase in size. After a moment's thought, he came up with a device that sent them a signal. The aliens flew to his call, but as it turned out they were quite aggressive and attacked our scientist. He picked up a pistol to give them a rebuff. You will help him in the game Scientist vs Aliens. In order for our scientist to make a shot, you will need to put the same objects on a special field in one row of three subjects at a minimum. Then they will disappear from the screen, and our hero will shoot at enemies.