Super fun! I did run into a lil bug where you can move around shop items with click and drag. Also going into settings loses the game. (I imagine you know about these but just in case). Such a great idea. Wishlisted on steam :) Lemme get that endless mode
edit: (sorry if this is overwhelming, just think this is a great game and want to help by offering bugs) I also ran into a bug where I played a single blank tile to try and delete it with the Voucher modifier and the game is kind of frozen. I can still click around, but nothing really happens and I can't move tiles in or out of the play area.