Alien Phobia
_Alien Phobia_ is a single-screen shooter. There are exactly three moves
available: walking forward (arrow key up), turning around (arrow key left and
right) and shooting (enter, holding the key results in constant fire). Aliens
enter the screen from all directions and the goal is to kill as many as
possible before the player is inevitably overwhelmed. Sometimes a killed alien
leaves behind a flame thrower which allows to kill aliens more effectively –
as soon as the ammo is used up, the player automatically switches back to the
standard pistol with unlimited ammo. When the player is defeated (there is a
health bar which is depleted when an alien is touched), the game ends and
maybe the player can enter a name into the highscore list. Only the number of
killed aliens is relevant for this.