Concept is good, the execution is childish, and that isn't a problem, but every minute is adbreak, makes it worse with unskippable ads that require double back actions and are laggy and the game freezes anytime I accidentally close the game when I have to spam the back button for the second bugged ad page to close...even the options button doesn't work without additional effort(have to use phone back button to resume puzzle then options button works as intented, without titles for the buttons..)