Sorry for being quiet, I have been a bit busy (by which I mean "going to the pub") recently.
Yes, I have! A platformer in the style of Door Door mentioned earlier. That has got legs, I think. It won't be a conversion though, it will be a new game made from scratch but with the basic concept in place. So expect new graphics, levels (and level structure), likely some modified gameplay elements... and definitely a new name (I don't know what yet, though).
When I have something to report, I will post