As other people have said, a hold function and being able to hold the left/right arrows to quickly move left/right would be awesome.
Besides those two nitpicks, this is a very, very unique take on Tetris, and it's really unfortunate that the Tetris Company is as sue-happy as they are, because I'd love to see this turned into a multiplayer online game. Incredibly fun and challenging, this is seriously an awesome idea.
Difficult but challenging. Great idea. Less is more ;)
This is incredible.
Gameplay ----> https://www.youtube.com/watch?v=sJuYYUixk4c Challenging and fun!
Interesting twist on a puzzle classic. My only complaint is that, as someone who almost never plays puzzle games, it took me a tick figure out how to spin the blocks. In design it's usually best to assume that not everyone will catch what you think is obvious. Still solid entry that succeeds what it sets out to do.
I want to wish all fellow game designers and artists good luck on the Construct 3 Game Jam!