Took me some time realize left-clicking slowed time, then the platform idea made sense. Although I'm still not sure how to push the squares over the spikes.
It's a fun game with a great idea, my feedback would be a small tutorial perhaps :)
Well done !
For the level with blocks, there is a hint in the start text, you have to hold down LMB until the key power runs out, then small black hole thing appears pulling blocks in the air, which allows to complete the level, but In the last moment I somehow managed to make it invisible :/
thanks for feedback :)