Defender In this game you have to defend yourself in an area of space that is dominated by aliens. One by one they come into view, heading on a course straight for you, firing randomly as they travel. Whenever one shoots you or scores a direct hit by running into you, you register a loss. you can only sustain 20 losses before you die and your task is to shoot down as many aliens as you can while remaining alive. You can move around by pressing the cursor movement keys and you can fire up, down, left or right by pressing one of the cursor movement keys while holding down shift at the same time. Every alien that you destroy is registered as a success- ful attack.