The idea of this game is that the player has to press a box if the icon is a shot has to drink one shot. When the shot comes out with a red X does not drink; the game is turn-based.
in this game the shot has a number, which is the amount of shots that player must drink that turn. 7 shots of 0, 5 shots of 1, 2 shots of 2, 2 shots of 3; A total of 15 shots in the table.
For those who buy the app, so go ahead and buy it.
More info in the app.