i like it! Very fun

I found one bug tho: if blocks are close enough to the spawning spot then you can just click very fast and blocks will spawn very fast continuously and instantly be part of the tower. The camera scrolls up and you click so the height gets bigger and bigger to infinity if you're fast enough clicker

Oh sweet, your game reminds me of tricky towers, that's a good thing !

The core mechanic is working well, I do prefer having some objectives and not just a simple personal highscore to beat.

But what is there, if fully functional and fun to play with, nice work.

And side note, I found a funny exploit : if your tower is rapidly growing enough, you can make blocks spawn on top of each other and launch into the sky really quickly 

I did a highscore of 181 meters high

I liked the concept but i think it could benefit by having more specific goals than to just go as high as possible.  For example, connecting a structure between platforms or reaching targets or areas.