This is a super neat concept, and the visuals, music work super well. It took me a little bit to figure out how things worked/what I was supposed to be doing, even after reading everything. Maybe I'm just slow, but I think some visuals (like a screenshot with arrows to different things) on the tutorial page would be super helpful.
Some other people already said it, but the resources still just come across as an economy due to the design. On the other hand, I think that the use of tetris pieces and the idea of wanting to pack them in to conserve space in a city-building sense is a super novel approach to the theme and I think it more than makes up for it.
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Now that I see the comments I must agree with them, like you mentioned ditching the whole resource thing probably would have worked out better. As it stands, I'm not sure if it even would be a city-builder without it considering it's barely one as is. Definitely overlooked that one somehow. Thanks for the detailed feedback!