1983 Atarisoft
Platform: Commodore Vic 20
A short entry which we will try and flesh out soon. Vanguard was listed as being due for release for the Commodore Vic 20 over at https://www.digitpress.com/faq/atarisoft.htm – though was cancelled either due to the dying Vic 20 market or the collapse of Atarisoft.
If you know anything more about it – please do get in touch with us.
http://www.vic20listings.freeolamail.com/vic20/mags/hcw/83-07-26/vangard.d64
I remember typing this into my vic from popular computing weekly, so I searched for a listing and fount it on the above site
Very cool! At least the Vic 20 got something of a conversion, even if unofficially! :)