Defend the Earth

Описание игры
Defend the earth from enemy space ships.
Как играть
Planet earth is attacked by enemy space ships. A space attack pad is launched to destroy these enemy space ships. When it failed to destroy all of them a space ship is launched. The space ship travels in space to destroy the enemy space ships, locate their origin, and destroy their launch pads in an alien planet. The game instructions are given in the game itself.