I enjoyed the sense of discovery. This game borrows a lot form procedural-generation aesthetics and I found myself thinking moving my understanding of what I was playing. At first it was Tetris, then it was some procedurally generated labyrinth with the Tetris-parts creating a sense of risk/reward (the more you collect, the harder it will be to navigate), then it became a static labryinth where I seemed to be discovering pixel art from an intimate-but-obscuring close range. It played with my expectations.
I really enjoyed the moments when I was able to free pieces from where they had fallen by picking up protruding parts.

I like the spirit of little T block. There’s an initial period of conformity and playing the Tetris game, but once they set their mind to going up, they don’t stop. And, in fact, they can’t stop: stopping is death. I also like the complex ideology (probably not the right word) of tree building- You can start getting pieces in the tangled tetris maze and get stuck and become a part of the collective, or you can wait until you get out and start becoming a tree in the world of the shaded alien pixels. No matter what, you die by going off the bottom of the screen, and some alien monster saying “OK you win” doesn’t seem any more validating than dying anywhere else.