Very well made game! I like the concept and the idea.
One thing that really annoyed me was the moment when the shape changed its size, it was impossible to predict how they would change it, which forces you to play that round over and over again until you memorize it. I would recommend you to change the size of the shapes BEFORE you have to drop the shape on the bottom.
Even though the concept makes the game simple and easy to play, I feel like this isn't really suitable for pc. You've made an app out of it (or started with it, I don't know), and I feel like it should've stayed there; a mobile game is what it is. The clicking is just not a good replacement/alternative for tapping.
Overall, it works as a mobile game, but is not good enough for a pc game.
I LOVE this concept! It's always nice to see original ideas instead of typical platformers or general point and click games in the game portal. Nothing much to critique, I think it's a great game.
I think its strange or at least super hard because the targets size is changing while you already have to "calculate" :P if you know what i mean.
Pretty decent idea, but at first the game can be confusing and the description doesn't help too much.
Also, the artstyle is perfectly fitting.