Is that... dynamic music I'm hearing??
Also, the X block is the bane of my existence, haha. Other than that though - very cool game, loved the concept! The yellow dots are a very fun addition!
The only constructive feedback I can give is that it seems like I need to tap S constantly for things to fall down fast - would be nice if I could hold the button - and I also think the blocks should decay a little quicker to make the mechanic more meaningful!