Fun for a while; I wish there was the flag mechanic from the original minesweeper, just to mark where you know snakes are because I found myself playing this like normal minesweeper until I either had most charms or has some unclear locations. I guess that is one problem with the game, it can never really get hard, because there has to be an equal amount of snakes and charms PLUS empty tiles and at a certain point you can just use the charm safety net to spam tiles and then figure out the rest with the clues on the tiles.
This variation is fun though :) It's a good game and very well polished.
Also I think when you have all the charms all snakes should be revealed and the level should be cleared