BLAST FROM THE PAST
-------------------
from Sinclair Programs September 1983

FOUR AGGRESSIVE spaceships appear at the top of the screen.  You are charged with the defence of Earth and,
for the job, have only a refurbished cannon.  Press 0 to blast falling bombs and gain points.  The
cannonball with move only so long as you continue pressing 0.  The further a bomb is from your cannon the
more points you gain for hitting it.

Blast from the Past was written for the 16K ZX-81 by G Aitken of Warrington, Cheshire.