Thank you @ahmadmanga, both for your up-vote and for stopping by. :c)
I'd have to agree. The graphics were not the worst aspect of this game by far - and it looked fairly good on both Atari and Amiga.
As for the 'Real Ghostbusters' cartoons of the 80s and 90s - they were actually pretty good from what I recall. Then again - its been a while and memories are only coming back in flashes.
Its certainly a franchise that 'could' use a 'proper' reboot. :c)
Thanks again!