The game itself is very good, and the graphics are great, but ads pop up MID-GAME and ruin gameplay. It's even worse if you accidentally click on one of them because you'll lose the puzzle you're working on entirely. I'm uninstalling because it's so unplayable. Correct it so that ads run between games and I'll be happy to reinstall. Otherwise such a shame since it's a lot of fun when it isn't being totally ruined.