I have uninstalled this game after 1 day. It's a great game with superb graphics and a great idea, BUT way too many ads which appear in the middle of games, no option to turn off timer so games are too short. I'm not interested in beating the clock just want to play and maybe beat my own time. Also it drains my battery ridiculously quickly. If they removed the up against the clock feature I might be tempted to pay for no ads.