What other reviewers said. Used to be good, now it's being changed to keep people playing as much as possible with cheap tricks like 'only X% of players managed this level' (which is usually high 80s or 90s so why even bother?) Or the ridiculously high numbers of games for the daily tasks (sometimes 100 grids are required) and the stupid tournament - all just to get you to play one more level. I removed the ads, otherwise i would have gone crazy. No longer fun.