Guss was the protagonist of at least four Spectrum games, within the 'Astrodata 3000' series of Creative Publishers (soon in CEZ, I hope). It was a series of kiosk sales, and I had (and I have) the first one. His charm (apart from the logical subjective appreciation) was the rudimentary synthesis of voice he incorporated, which for a child not reached adolescence was little more than magical.

I did not know until recently the existence of a Guss adventure for Amstrad CPC, framed in the collection 'Amstrad Data'. And I don't know if it was the only one in the series or there were more.

It is, like those of Spectrum, a very simple educational-conversational adventure, probably programmed in BASIC that, like the previous ones, probably only has an interest for those who had it and remember it with nostalgia.