I really love the art and sound design, it's a great aesthetic. I think I see where you were going with the slowed time mechanic, and it's a cool concept. I wasn't able to progress past the second level though, it's too hard to get my hand from the mouse to the arrow keys fast enough to use the platform before it falls away.
Maybe if the objects fell a little slower after clicking start, or there was a countdown, or just allow the arrow keys to start the level without clicking.
The language barrier might have hurt in my case, I got the basic gist, but maybe there was an instruction I missed.
I'll download again and try some more if you DM me with tips on getting past that 2nd level!