Black Jack on Ruby by American rules
Starting amount of the player is $100. First make a bet.
A deck is shuffled and 2 cards are dealt to the player and dealer (the first card is hidden).
A player can take one more card until he says "Enough" or the amount of points is higher than 21. The move automatically goes to the dealer if amount of points is 21.
The dealer takes the cards until the amount of points is higher than the player's.
The bank is taken by the one with a large amount of points (the player returns a bet of 2 to 1 in the case of win). The player returns his bet with the same amount of points. The player returns a bet of 3 to 2 in the case of Black Jack.
The game ends at the choice of the player or by exhausting his money.