Thanks for sharing!

I'm seconding the "incredibly fun" comment, but I would keep the occasional big numbers. It probably took me an hour to finish the game and I wouldn't want to slow it down further. The little extra bit of randomness/luck it adds is nice too.

When it comes to the UI, I was a bit confused about how the gameover and piece removal works. I guess if there are no legal moves it removes a piece?

Also, the multiple move mechanic where the last piece to move is automatically preselected sometimes tripped me up a few times and caused me to accidentally downgrade a piece.