Sky Battle by Ideal, was a World War I flying aces game with two plastic bi-planes at each end of a curved board with a plastic frame illustrated with sky, clouds and trailing smoke. Each plane was mounted on a a ball-bearing joystick style gun (with button on top,) much like those used in Crossfire, which you used to shoot out the supporting struts underneath the wings of your opponent’s plane, causing it to go into a nosedive and lose the round. Simple, addictive and with a surprising level of skill involved, Sky Battle remained a favourite toy for years since the planes and ball bearing guns would work just as well off the board.