You need to have Energy to start the game. The Energy meter will show if you have enough energy to play. The meter will recharge over time.
From the main screen, tap the Start button to begin the game.
There are 32 cards in a deck and cards are numbered 1 through 8. Each number has a maximum of 4 cards.
10 cards are dealt to each player, and you can choose up to a maximum of 4 cards to play. You can now trick your opponent by selecting cards and start bluffing.
But be careful, because if your opponent taps the discard pile and calls your bluff, a load of cards will be added to your deck. The first player left with no cards is the winner.