Great work, controls are easy to glance, seeing both boards at a time, clean and with no annoying twists like "you have to press a button to switch to another board".

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!

Your game is impressive! The effort you've put into it is evident. The quality of work shines through, and most importantly, it's a lot of fun. Excellent job^^