What is the difference between a single-deck and multi-deck blackjack game?

Single-deck only uses one card deck, while multi-desk uses several.

Hi @bigfootisreal,

The main difference between single-deck and multi-deck blackjack games lies in the odds and the house edge.

In a single-deck game, there's only one of each card value (excluding suits), which means if a certain card has been dealt, you know there's no chance of seeing that card again until the deck is reshuffled. 

This can be advantageous for players who are good at "card counting," a strategy where you keep track of the high and low cards remaining in the deck to gain a betting advantage.

On the other hand, multi-deck games make card counting significantly more difficult due to the increased number of cards. 

However, they tend to deal more hands per hour since shuffling is less frequent, which can be a plus for players who prefer a faster-paced game.

The house edge (the casino's statistical advantage) also varies. 

Single-deck games usually have a lower house edge, assuming the rules are the same. However, casinos often change the payout for blackjack from 3:2 to 6:5 in single-deck games, which increases the house edge.

Adding to the above, it's also worth noting that the strategy can change slightly between single-deck and multi-deck blackjack. Some decisions on whether to hit, stand, double down, or split can depend on the number of decks being used.

For example, in a single-deck game, you might double down on a total of 8 against a dealer's 5 or 6, which you wouldn't do in a multi-deck game.

So, if you're planning to switch between single-deck and multi-deck games, make sure you're aware of these strategic differences.

One more thing to consider is that single-deck games are often more scrutinized by casinos for card counters. If you're showing signs of card counting (like changing your bets dramatically), you might draw more attention from the casino in a single-deck game.

In the end, both games have their pros and cons, and the best one for you really depends on your personal preference and strategy.