This game rules! It really just kept growing on me the more and more I played it. The deck-builder conceit of only having a defined number of blocks to use per round really encourages more aggressive and messy play, whereas in traditional Tetris you have the time and space to play more patiently since you only have to worry about the eventual "overflow" at the top. Then the whole thing is spiced with that layer of gradual discovery and figuring out what each block does and what a "delete" even is! The cascading scoring effect is also really pleasing in a brain buzzy way. Super classy, super classic.
One thing I was surprised by is that when I first started playing and was learning to grasp the rogue-ish / run-based elements is that the concept of Tetris with non-traditional, non-tetromino pieces thrown in is actually pretty compelling all by itself.