I think common rules and regulations for casino games, including Blackjack, focus on fairness, integrity, and player protection. In Blackjack, players aim to beat the dealer by achieving a hand value closer to 21 without exceeding it, with options to hit or stand. Casinos establish house rules, such as when dealers hit or stand, and set betting limits. The usage of multiple decks is also a standard practice to curb card counting. Oversight by gaming commissions ensures compliance with laws against cheating and requires proper licensing, promoting a secure and trustworthy environment for players.