There are 2 modes designed in this game:

The first : Single Mode

In this mode, you can continue to challenge higher levels, whenever you Level Up! You can see the pointer of the Level keeps rising
There are 4 score cards and 4 multiple cards designed in the game. When you turn over the score card, the Score will add this score. Similarly, if the multiple card is turned over, it will be multiplied by this multiple.
When your score reaches the Level x 100 (eg Level 1 -> 1x100 = 100) you can Level Up !
When you get a trick card then Game Over! Don't be discouraged, at this time you can click Play Again to challenge again
If you want to check your highest personal record in this mode, you can switch to the Record screen to check your highest Level and Score

The second : Battle Mode (two-player mode)

In this mode, you can have fun with your friends. Of course, it's not about game skills, it's about who's luck is better.
At the beginning, Player 1 will flop the cards first.
One will prompt Player 2 to flop, and the 2 players will take turns to flop a card.
The player who flips the ghost card loses, don't be discouraged, you can click Play Again for the next duel