i like this game's concept and aesthetic a lot but i feel like it suffers from a lack of interface feedback. having a "gutter" between tiles that doesn't respond to clicking makes gameplay more frustrating, as does the pause when the board is refilling during which my clicks are also ignored. finally there's no way to deselect a tile i've accidentally clicked without selecting another tile, which leads to accidental swapping.
if the controls had a bit of polish i could see myself coming back to this game a lot. let me know if you ever make any of these changes and i'd be happy to try it again and leave a rating!