Nice! It feels stabler and more comfortable for me to play in full screen :)
Triggering the bombs would make the game harder, and I've been triggering them against myself haha...
Perhaps there could be self-exploding bombs which don't need to be on the surface? E.g. there could be a countdown number shown on the circle specifying it's gonna explore after how many turns. Just an idea. But it might complicate the simplicity of the game.
What do the white circles mean? I realised they may be the spawning points of the black dots, but there could be one line of text instruction on this.
Lastly, "Next piece" is only showing the current piece.
The arrow keys are still shown as "?":

