When a blackjack occurs for the supplier, of course, the hand is over, and the players' main bets are collected - until a participant also has blackjack, in which case it is a stand-off. Insurance is invariably not a great proposition for the participant, until they're quite sure that there are an unusually excessive number of ten-cards still left undealt. But even for the informal participant who plays a fairly good sport, the casino odds are much less, making Blackjack some of the enticing casino video games for the player. While the popularity of Blackjack dates from World War I, its roots go back to the 1760s in France, where it is referred to as Vingt-et-Un (French for 21).