Space Invaders are already lined up in front of your fortifications. Prepare for a brutal attack against aliens. Space invaders - an exciting retro game, known in the first game consoles. Purpose of the game Space Invaders is to destroy five rows of aliens that move horizontally and vertically towards the bottom of the screen. The tasks of the player are to control the laser weapon and shoot at the aliens approaching from above. The player can move at the bottom of the screen using the arrows. The ammunition reserve of the player is endless. Shoot at aliens and get points for every accurate hit. When most of the space invaders are destroyed, the speed of movement of the remaining invaders increases. With the complete destruction of aliens, a new wave of opponents appears, an order of magnitude stronger. The number of new waves of aliens is unlimited, which makes the game endless. Remember that space invaders are trying to destroy the laser weapon. If the opponent, having shot, gets on the gun of the player - the weapon will be destroyed, and the number of lives will decrease by one unit. If the number of lives becomes zero, then the game ends. Even if one space invader reaches the bottom of the screen, aliens win and the game ends. Periodically, the "mysterious ship" flies at the top of the screen. Destroy it and get bonus points.