No mention of Sam fox strip poker on the zx spectrum in 1986. By the time 16 machines came along and disk swapping was common things became quite convincing. High chance of getting a virus that way though.
On the c64 too, along with assorted other games with nudity ranging from crudely drawn images to scans. And one of the first things the improved graphics of the Amiga was used for was whole series of floppies with scanned nude images.