I bought a copy of MineSweeper3D years ago and was curious how many people are out there playing it. Do we know about how many full version (paid) copies have been sold?

I have had the same goal of beating all the boards. That said, the zeolite (insane, 8-sub) seems scary. Out of the 768 boards available I have completed 616 (80.2%) of them. I would be interested in how many boards some of you have completed.