Blackjack, also known as 21 seems very complicated to me since it has multiple players.
I played once upon a time. It's more straightforward than you might think....really it's about you and the dealer. You *want* the other players to know what they're doing, but you don't need to interact!
Oh I was intimidated because I know it can be played with one or more decks.
THAT is true! I forget how many decks "the shoe" has -- that's what the dealer is dealing cards from -- so it does add a level of chance. That's why "card counting" is a technique players try to use.
dealt two cards, normally one up (exposed) and one down 
(hidden). In most other countries, the dealer receives one card face up. The value of cards two through ten is their pip value (2 through 10). Face cards (Jack, Queen, and King) are all worth ten. Aces can be worth one or eleven. A hand's value is the sum of the card values. Players are allowed to draw additional cards to improve their hands. A hand with an ace
I'm thinking from the scuttlebutt I'm hearing that's it, but I don't know anything for sure other than they do have a script they love, they're still tweaking." The film may also take place more in the real world than in the past according to the recent interview: "That's what I'm told, but you didn't hear me say that," Boxleitner joked. "I think it's going to be a lot about taking the company back because if you remember Sam Flynn