I like the idea of the game (I've killed plenty of time playing minesweeper). As others have said the game needs some extra work. One thing I'm not sure if anyone mentioned, but in minesweeper (or at least the one I played) the first block you click is never a bomb. This requires on-the-fly map generation of course
I like the game and the hybrid theme, but personally I think the concept (i.e. minesweeper in 3D) is perhaps a bit too narrow. It isn't enough for me to want to play it over plain minesweeper. Personally (and maybe it's just me), I think it would be better if there were a somehow more advanced platforming aspect. Perhaps blocks rise and lower into lava - forcing you to move around while thinking? Just throwing ideas out there :). I will say the explosions are much better in this version than the tradition minesweepers.
Overall the game played just like minesweeper does so nice job! It was a fun play. I hope you continue working on it and make it better.
I would really appreciate if you gave my game a try.