Hi Terzom! This was a fun little game and I definitely enjoyed my time with it.
I agree with Latinastrike about having a little bit more tutorialization. I didn't work out that you could rotate pieces until the modifier about every 3rd piece being unable to be rotated popped up a couple of rounds in and wasn't ever completely sure on what constituted a win for a couple of quick examples.
Would be great to have an option to expand out the items that you can purchase between rounds, or maybe even rerolling the selection of an item once the player purchases it?
I really like the addition of the different negative modifiers to each round, the have to place pieces adjacent made for a really interesting challenge. But a couple of them (the obscure and the jackhammer guy explicitly) felt like they really didn't hinder the round that much and felt like an auto pick just because you didn't have to do much to play around them.
Looking forward to see where you take it in the future!