Odd shooting game - you're firing your gun at a bunch of enemy gangsters in their car, but every hit you score nudges them closer to their hideout, so that your "reward" for a perfect game is having your enemies escape to safety. Which isn't very motivational, if you ask me. The US versions make slightly more sense, since you're shooting the enemy aircraft in order to make them blow up, not to help them get away.
 

ORIGIN: UK (1976)

VARIANTS: Copter Fight (US)
Bi-Plane Battle (US)
Crazy Machinegun (JP)