I think the clone I'm semi-remembering was a PC game. Regarding your second question: There were very many unlicensed Nintendo games. I don't know how many of t

I think the clone I'm semi-remembering was a PC game. Regarding your second question: There were very many unlicensed Nintendo games. I don't know how many of these Nintendo fought. They very famously battled Tengen over this issue in the courts.