Description: Day after day, the hope for human survival is fading. Half of the Earth surface is inhabited by the monsters. Now people have to dwell in specially made fortified settlements. Here they live, work, study,grow children and...invent new ways to fight the aliens... Now the leading scientists of Earth are working on creation of the new monster species, which should stop the invasion! Will the scientists succeed? Can their plans be realized, or this can cause even a larger disaster? In the new part, you will find: - 5 new missions - new music tracks - new type of monsters - monster boss - new objects Also, after numerous customer requests, we have added ability to choose difficulty level. Now, after installing this add-on, you can select difficulty to match your skills. NOTE: This addon will work only with the FULL version of the Alien Shooter game.