Why are single deck Blackjack games better than multi-deck games?

Answer 1

If the rules table rules are the same, single deck odds are better than multi-deck odds. This is because the dealer is more likely to bust since the dealer cannot hit for five straight 2's and things like that.

For card counters single deck is very easy to beat. This is because the "true count" fluctuates up and down very quickly in single deck. Multi-deck games keep a more steady count which produces favorable counts less often.

Keep in mind that if the single deck game you are playing is paying 6:5 on blackjack rather than 3:2, then the odds aren't so good. You are much better off at a 3:2 paying multi-deck game. Unfortunately most single deck games are only paying 6:5 nowadays. That gives the house roughly a 2% advantage versus a multi-deck game that might only have a .5% house advantage.

Answer 2

It's a little more complicated than yes or no. Most casinos have different pay-out odds between the single and multi-deck games in black jack. example being 5:6 in single and 3:2 in multi. Also there my be different rules such as dealers requirements to hit. The only real advantage to single deck is it's easier to count cards but unless your proficient at this your better off in pay-out odds and getting the card you need with multi-deck games imo.