A few problems.
The game was amazing and addicting, but I pressed Esc... and I accidentally pressed "Return to Menu", then I clicked Normal, back to the difficulty that I was on, and as soon as I started bombs started falling, and the tip was still blocking my screen... Then after 5 minutes, I realized the round was never going to end... I played for a while longer in the never ending game, and then I pressed Esc again. Went to different difficulty, and the exact same thing happened again.