Your spaceship is crossing a dangerous cosmic plasma zone, where the frightening plasmas live. They're approaching the spaceship so you must get out and trying to repel them to avoid they reach and fire the ship's energy aerial (the green circle to the right).
You are armed with a special repellent ray and must repel the plasmas completely to the left of the screen till they dissapear. Then a new enemy appears and you must do the same again.
It's hard to control the astronaut and the background is too confused, full of coloured planets, and all this make the game difficult and boring.
