Minesweeper
I enjoyed this, and think it needs to be rated more highly, but there are a few critical features missing. 8s should, as previously suggested, automatically reveal their adjacent tiles, as it does in minesweeper.
More importantly, however, there needs to be a ticking sound when you're running out of time, so that the player is aware they need to close the gap before being hit upside the head with a game over.
Lastly, as the game progressed, I was experiencing a bit of slowdown, and it was like my cursor was on ice, but I don't see any other mention of that in the reviews thus far, so it might be on my side for some reason.
Great minesweeper clone, I hope you improve it even more!