I had similar issues to Mossieur Patate witht he loading the game was like click that error oh click here folder easy enough. The game it self I was not 100% what I was doing the best I got was maybe 5 or 6 blocks high it seemed to really hate if you are off just a tiny bit some times. Was unsure what the triangle was doing at first till I noticed it was killing the block some times or reducing my hearts on the screen.  But other then that nice job on you game.

(I am now in a rush to test as many games as possible to help, so please do not mind the cursory reviewing style.)

Error message when trying to launch through the itch.io application:
"Application folder:
C:/Users/lecon/AppData/Roaming/itch/apps/pixel/Pixel
There should be '2dPixel_Data'
folder next to the executable"
I see a "Click HERE!!!!" folder, so I can solve manually, apparently; I would advise rebundling the files so that launching the executable works directly! Glad I thought about taking a look! :o

Detail: Development Console shown in the lower-left corner (with a NullReferenceException error X))

what to do? Ah, got it!

storeys often stop activating at collision towards the third one!

Watching the smoke/dust elevate while sweet music plays: I get a poetic feel… :) (In contrast to the harsh brutal sound for materializing a storey. XD)

Ah, managed to get higher, and noticed the ‘obstacle triangles’ mechanic!

Apparently, if you generate the storey just a bit too far from the centre, it does not activate, and you get stuck. Same if you generate one in the void. Still, you implemented a reload feature! :)

sometimes, a storey can disappear at collision-activation

Managed to get rather high (at least ten storeys?)! :) I would suggest adding a score (and high score?) feature to give the player a better idea of his progress.

Takeaway: the concept is interesting, even though the connection with the constraint seems a bit loose to me. I also liked the somewhat melancholic peaceful atmosphere through the scenery (including the white pixel windows, and cubic smoke/dust!) and music, so you did a good job at capturing the theme. :) (I also like the blurry style of the thumbnail/cover, by the way!) Generating those storeys already feels punchy, although there are some bugs as you noticed. I think just some quick indication on how the game is played would help (tip: add it on the game page!). I also think some other variation in the mechanics would help get more variety in the longer run (although I did notice the randomness for the triangles!), but it is already a good base (no pun intended).

An interesting prototype that I encourage you to finish. :)

I believe i did not understand very well how it is played: when the block falls where the black triangle is, it does not “attach” to the block below, no matter how many times i click—it keeps jumping.  Is this normal, or am i doing something wrong? Also, sometimes blocks disappear and i have not figured out why.

I also would recommend against distributing the game in a RAR archive, given that Windows Explorer cannot handle these files and i had to download unrar to play the game.  Maybe not a problem for a jam—we all do what we can with such a short deadline—, but in general i think ZIP archives are a better choice.

I do not want you to think that everything was negative, because i did like the art and the sounds are cool too. I am sure that given a day more to polish the rough edges would make it shine as it should.

Good work!

Cool art, good sfx , Meh mechanics 

it feels like you didn't have enough time to finish it