As a game I agree that it ultimately doesn't work quite as well as the original minesweeper, but I definitely am glad it was made. It's awesome! Visually the cascading effect of boxes being revealed is done so well and it's fun to see familiar patterns from the 2D version show up here -- I'm sure there are many new patterns in this 3d version that I haven't found yet.

Without giving it any thought really, I wonder what modifications (if any) needed to be made to the flood fill algorithm in this version.

https://en.wikipedia.org/wiki/Flood_fill

Sometimes it's more about the challenge really. It started as an university assignment. Later I ported it to WebGL.

The original minesweeper rules don't make for a great game in 3D. I added the "sweep mode", where you can remove mines, to make the game more appealing in 3D