Blackjack
| A blackjack example, consisting of an ace and a 10-valued card | |
| Alternative names | Twenty-one | 
|---|---|
| Type | Comparing | 
| Players | 2+, usually 2–7 | 
| Skills | Probability, Memorization | 
| Cards | 52 to 416 (one to eight 52-card decks) | 
| Deck | French | 
| Play | Clockwise | 
| Chance | High | 
| Related games | |
| Pontoon, twenty-one, Siebzehn und Vier, vingt-et-un | |
Blackjack (formerly black jack or vingt-un) is a casino banking game.: 342 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". This family of card games also includes the European games vingt-et-un and pontoon, and the Russian game Ochko. The game is a comparing card game where players compete against the dealer, rather than each other.