Alien Dropout
_Alien Dropout_ is a fixed screen shoot ’em up based on the arcade game Astro
Invader. Earth is threatened by killer moths that the player has to kill. On
the screen there is one big moth in the middle and on each side of it are five
columns. Smaller moths constantly enter the screen and one at a time they
position themselves in the columns. When a column is full of moths they start
descending towards the player who has to shoot them down with his laser gun
before they reach him. The large moth in the middle is normally
indestructible, but if 200 small moths are killed it will be released and the
player gets a chance to kill it. Once it has been destroyed a new level begins
with more powerful moths. The player can choose a skill level from one to six.