Ah. Hard game
the Puyo-puyo mechanism of dropping two pieces at a time, say, and starting at a slower speed, might give the game a slightly more pleasant pace (while at the same time making it seem a little more derivative
)
Alternatively, as an idea, you could have the required size of the chains vary from level to level.
The production values are good, and the game has a nice feelbut the game moves a little too fast for my fingers to deal with
Have you thought about putting in a 'next piece' counter? Sometimes I was unable to react fast enough to put a piece where I needed it...