Quickly 21-Point777 Fun

Select 3 cards within the specified time to calculate 21 points. After entering the game, all cards are exposed and turned back after 3 seconds. The user clicks on the playing cards once, and the current clicked card is inserted into the bottom frame to calculate the number. If the 21 points are not matched within the specified time, it means failure. It costs 20 gold coins by default to enter the game, and 50 gold coins are rewarded for success. There are four modes in the turntable mode: normal mode, double training reward, automatic flipping of flower cards, and counting +5, which increases the fun of the game.