Very fun! Shifting my attention from one board to the other after every few moves is a great addition to Tetris and kept me on my toes.
There were a few misinputs- like I'd hard drop on right when I meant to hard drop on left, but I eventually found a rhythm.
I got into one of those "Tetris Trances" and before I knew it, I'd been playing for half an hour! 😅 It's addictive!