Blackjack (formerly black jack and vingt-un) is a casino banking game. It is the most widely played casino banking game in the world. It uses decks of 52 cards and descends from a global family of casino banking games known as "twenty-one".
Thought to derive from another popular card game called Chemin de Fer, also originating in French casinos, Blackjack was first known as Vingt-et-Un, which simply translates to Twenty-One.
The player can control the snake through the arrow keys on the keyboard, aiming for the food. If the food is eaten, the snake will grow an additional one segment and a following food is placed on the board. If the snake crashes into the border or bumps into itself, the game is over!