TORPEDO
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from Sinclair Programs September 1983

THE SCREEN displays a stretch of sea with two boats in it - one large, one small.
Lurking underneath is your submarine with its torpedo ready to fire.  Guide the
torpedo forward with "8" and upward with "7".  Once it has exploded another will
appear.  They will continue to appear until your time has elapsed.  If you destroy
the boats completely press "0" to stop the time.

Torpedo was written for the 1K ZX-81 by Robert Gill of Portsmouth, Hampshire.