Cute little score chaser you have here, the only “big” feedback is the music just being two toned monotone notes on the higher end. I know music is hard and I’m not saying you have to make a masterpiece, but a little bit more variety next time would be nice.
Another trick on the same line, is you can you use sfx.play_ex() to set the pitch of your sound effects (how high or low it is) randomly by assigning it a random number each time you play it, let’s you get way more out of a singe sfx file.
Other than these little trick, the game was fun, the fast stone was a cool spin on the otherwise slow-ish falling debris! Well done!