Although I'm terrible at Minesweeper, I must say: this game has surprisingly managed to innovate the mechanics to a point where the gameplay feels both familiar and unfamiliar at the same time, making it very engaging.
The interface is extremely clean and polished, which really helped in understanding how things worked. The score counter is, without a doubt, a great addition to promote healthy competition (despite the issues you mentioned with the online scoreboard tool).
The art and overall atmosphere fit perfectly with the Halloween theme, and the ghosts really do become VERY unwanted haha.
I confess I found the tutorial quite difficult, but I wouldn’t say it’s poorly explained—rather, the game is just really tough to progress in. However, since the levels are short, it’s easy to keep playing again and again until you finally manage to finish one.
One thing I noticed is that there are many elements designed to make life harder for the player, like the shrinking light and the limited number of ghosts we can "release".
This, in itself, makes the game excessively difficult. One small change that could improve the balancing—though simple—would be adding a brief delay before the player takes damage from the ghosts again. I know the floors activate when the player steps on them, and adding a delay could potentially give the player an unfair advantage. However, the fact that stepping on the wrong tile already traps the player should be enough to balance this, since, in theory, the chances of a player finishing the level by randomly stepping on tiles would be incredibly low (unless, of course, they have all the luck in the world on their side haha).
As always, another great game, just like the ones from previous jams. I remember your games from past jams, and the quality is still high. Great job! Congratulations on the game, and best of luck in the jam!
Edit 1:
I almost forgot to mention this, sorry about that, but the music also fits the overall atmosphere very well. However, one thing I noticed is that the sound effects are a bit too loud compared to the music, which makes them subtly "overpowering" when we activate many tiles at once.