Data East's Torpedo Alley pinball machin boast the best sound and an animated play-field feature. Jackpot sequences are independent of either 2 or 3 ball multi ball, which can be started at any time.
 
Features include: 
Flippers (3), 
Bumpers (3), 
Slingshots (2),
Instant Multiball (2 or 3 ball),
Left Outlane Kickback,
Torpedo Tube Kickouts (2),
General Illumination Flasher Relay,
Double Layer Backglass.
Sinking ship through periscope glass on playfield (triggered by ship targets)