Get to a certain point and there's no moving on until real money is paid. Been stuck on the same level for about 2 weeks now. The level needs a large amount of blue to raise a curtain. You'll only have a few blues on the screen at any time. Half the moves are gone before enough blues get destroyed and the curtain raises. It's too bad game makers can't figure out that if a player can't move forward, they'll uninstall games.