The 5 x 6 dice get rolled upon 'start' - you decide when to click 'stop' .
Now you click dice to improve your points. In addition you need to get all dice 'used', means, all dice participate in the value. This is a prerequisite to get your highscores updated.
The thrill is, that every click has a cost and you have only 20 clicks per game and you need to have all 5 rows with all dice used to enable the update of your Highscore(s)