I had a click sound, but it turned out that on some devices playing the click via javascript works awfully bad (random delays) and it was more confusing than useful. I intend to work on it a bit once I add some customizations options and it will be possible to enable / disable sounds.
The order of levels is by 1) number of balls, 2) board size, 3) optimal number of moves.
Although not perfectly it's actually quite well correlated with difficulty - all levels above 100 are much more tough than any of the first 20 etc.
I had a click sound, but it turned out that on some devices playing the click via javascript works awfully bad (random delays) and it was more confusing than useful. I intend to work on it a bit once I add some customizations options and it will be possible to enable / disable sounds.
The order of levels is by 1) number of balls, 2) board size, 3) optimal number of moves.
Although not perfectly it's actually quite well correlated with difficulty - all levels above 100 are much more tough than any of the first 20 etc.