Blackjack, also known as Twenty-one or Vingt-et-un (French for "twenty-one"), is a comparing-type card game which is the most widely played casino banking game in the world. The standard game is played with one or more Anglo-American decks  of 52 cards. 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.

Poker is a family of card games that share betting rules and usually (but not always) hand rankings. Poker games differ in how the cards are dealt, how hands may be formed, whether the high or low hand wins the pot in a showdown (in some games, the pot is split between the high and low hands), limits on bets and how many rounds of betting are allowed. In most modern poker games, the first round of betting begins with some form of forced bet.

Online casinos, also known as virtual casinos or internet casinos, are online versions of traditional ("brick and mortar") casinos. Online casinos enable gamblers to play and wager on casino games through the Internet. Online casinos generally offer odds and payback percentages that are comparable to land-based casinos.