One of the simplest bet-worthy card games of all is blackjack. Every casino has it, and every good gambler loves it – not just for its simplicity, but its minimal house edge. Blackjack is the closest thing to a fair shake most casinos offer, which makes it perfect for a fair card-based betting game among friends and family.
Normally, blackjack is reserved for up to 7 players, plus a dealer, but that’s mostly due to table size restrictions and ease of security monitoring. Realistically, you can have around 15 players in a game, if you can provide enough seats to keep them all comfortable. Or, for larger groups, set up an additional table or two and play it blackjack tournament style.
Getting back to the issue of fairness, by traditional house rules, everyone in your group has a reasonable chance of winning. The dealer has a slight edge, as we all know, and frankly, this person deserves a little advantage since they are committing greater monetary risk to each round of play than any individual player. However, it is possible to adjust the rules so that the dealer and players are on equal ground.
The page linked below details more than 50 sets of blackjack rules and the house edge for each. Decide how much advantage you want to give your dealer, then play by whichever game rules align with that choice. Remember, the closer the house edge is to zero, the less advantage the dealer has.
If you want to tweak the variables for a perfect 0% edge (e.g. 100% RTP), the following guide offers a complete list of house rules and their positive/negative impact on the house edge.