What an absolutely amazing idea, despite its simplicity! I couldn't get very good at the game, but I had fun the whole way through regardless, and there's clearly an incredible amount of depth despite how straightforward it is. Like Tetris itself! Even just the natural risk-reward system you've got going on with the different-sized pieces is remarkable. This game definitely deserves way more ratings, preferably ones with deservedly high scores.
(Side note: I'm not sure why, but my 2023 MacBook Pro could not run the game and only showed the UI and played sound effects and music, but the gameplay itself was just a black screen. I could, thankfully, still play it on my old Windows laptop. I recognize most people probably aren't developing on Mac so other players likely won't run into the same issue, but I just thought it might be good to know this if you ever plan on updating anything about the game. But again, the game's great!)