The object is to try and destroy the
submarines with a limited number of depth charges available to your
Plug in a joystick to move the
destroyer horizontally across the top of the screen and press the
trigger to drop the depth charges. Charges will be dropped alternately
from each side of the ship and only two may be dropped at one time.
The fast moving small purple subs score 50 points each, the medium
yellow ones are worth 20 points and the large green subs score only 10
points. Thirty depth charges are allowed for each game.