I remember this game! And I am still as bad as it now as I was then. Overall a well executed remake of a classic. Visual indication of when a bomb is about to go is much appreciated. An explosion animation would add a lot.
I experienced a bug where I placed a bomb in the zone, but it didn't register as placed but I also couldn't move anymore. See image.
Great job on this! I had nearly forgotten about the original and this brought all the emotions of it back.