Very fun! Glad to see another dev use Tetris as a hybrid game mode! The mechanics and visuals were fun, and I found myself trying it multiple times to try to get a higher score. Both gameplay styles lend well to each other.
The only issue I ran into was that the slider for the Breakout mode felt slippery to control. I think it could have accelerated a little slower. Also, some audio would have been nice to have in the game.
I really enjoyed this one! Great work!