Blackjack

Blackjack is a comparing-type card game which is the most widely played casino banking game in the world. It can be played in various casinos in New Vegas. Winning 10 hands of Blackjack grants you the Double Down achievement/trophy.

Rules
The player draws cards to an initial two card hand with the object of bringing the total hand value as close as possible to 21 without exceeding it, so that the house, which plays after the player, will fail to get up to the player's total, or will lose by exceeding 21. Blackjack is played in many variations at casinos with different table rules.

Appearances
Blackjack can be played in Fallout: New Vegas.