Really creative take on the theme, I love games that adapt other ideas with unique implementations. As others were saying, as you were adapting tetris, I wish there was a way to clear lines and keep stacking pieces. Sounds and music would also be appreciated, as they add a lot of nice game feel. There are quite a few small bugs I encountered, such as being able to stick pieces to the side (maybe that was intended though, I'm not sure) or pieces being able to get stuck inside eachother if I spammed the button to make it fall faster. Overall, it's a quite cool idea that could use some more time and polish.