Not very zen when there's an ad popping up before and after every screen. Even less zen when the ads go black, freeze everything and the only way to fix it is to restart the game - and lose a life even though you won the level. And completely not zen when the ads don't just freeze the game but the whole phone and restarting the phone is the only fix. And the need to spend real $$ - and lots of it! - to win levels? Fix your greed and the bugs and it would be a decent game.