Use mouse control AirCraft's X-axis, Press <SPACE> to shooting bullet, All game has 3 level, pass level will add extra score, kill enamy-1 will get 1 point score, kill enamy-2 will get 3 point. Enamy-1 will shoot bullet, and move to attack aircraft, enamy-2 won't shooting, but move quickly and hit aircraft will make more hurt to aircraft.
