I bought this game for my phone and it rocks the house. I am a huge fan of minesweeper for Windows. I am very good at it, and when I saw this, I was all over it. It's the same thing, in 3D.
The graphics are great, for a phone, and it allows you to freely manipulate the object's orientation to see down in crevaces and around corners.
Positives: It kicks ass, and while the same concept, requires even more complex reasoning.
Negatives: Sometimes control is a bit imprecise because you're only using a stylus.