Flying-War

1. Click on the screen and the spacecraft will fire artillery shells.
2. Hit the red ball 100 points, and the red ball will turn into a green ball. Red and green balls do not cause damage to spacecraft.
3. Hit the green planet 50 points, at the same time, if the green planet encounters the spaceship, it will cause damage to the spaceship, the game is over.
4. The yellow planet also causes damage to spacecraft. Remember to shoot them down, eh.