Star Stream

Star Stream is a space shooter game similar to Time Pilot where your goal is to track down the mother ship with your sensor and destroy it for 1000 points in order to move on to the next stage while shooting at green ships for 100 points and big bombs for 500 points because if you ram into them, you'll lose a ship. If you ram into the mother ship you will lose a life as well. You can use 4 and 6 to turn your ship around in a 360 angle. Not only that but the missiles can follow the enemies and kill them.