The game idea is to collect Black Jack sum (21) on bubbles numbers. Bubbles with values from 1 to 10 are chaotically moving in the central square of the screen. And you have 4 glass pipes at 4 directions - left; right; up; down. When you click on some pipe, it shoots forward and may catch several bubbles. The bubbles numbers sum goes to your score. Try to collect 21 points - girls on the city square are waiting to reward you with their strip!