Sorry, moved my comment here as it seems a better place for it!
This is slick! I'm impressed with how polished it all feels considering the time restraints.
It bugged out on me: after I finished my first round, I clicked home then selected a new game to try, the game became unresponsive and I couldn't click any tiles. Had to reload the page to try again. I'm using my android phone FYI.
I tested it on my pc as well, but that bug didn't happen.
Really good work 👌