Probably just to add an explanation: My game generally ends because I have no rotation credits left. And I don't know how that works. I can see there is a yellow bar counting down something, but sometimes multiple numbers are deducted, and sometimes the yellow bars still show 1 but I get the message that I can no longer rotate. It also seems to affect the next game - if I restart a board, I have fewer rotation credits than when I first play a game.