Use the mouse to aim at the Enemy Ships (red) Use Space to fire. You have limited energy with which to fire bullets, but this regenerates every 0.2 seconds. The red bar at the top is your health, the blue bar is your energy. The yellow bar at the bottom is an indicator of your score. The number reported at the end is your score.
This project utilises cloning. A spawner makes sprites around the stage but only if it is touching the edge. The bars are set to an x value+your HP/ENERGY. The bullets are also set to be cloned when you push the space bar. Have fun!