Underneath "house edge percentage" lies a single number: the share of each stake a game keeps on average, known as the house edge. At table games it follows directly from the rules. A change in one payout or one dealer rule moves it, sometimes by more than the gap between two whole games. Knowing which rules matter lets a player compare tables in a few seconds and see what an hour of play is likely to cost.
The expected cost of play is the edge applied to the total amount staked, and the pace of a game decides how fast that total grows. A fast online table can deal several times more rounds per hour than a busy physical one, so a small edge applied quickly can cost more than a larger edge applied slowly. Multiplying the average stake by the rounds per hour and by the edge gives a fair estimate of what an hour at a given table is likely to cost.
Blackjack played with sound strategy carries one of the lowest edges in a casino, often under one percent, and the rules decide exactly where it lands. A natural paid at six to five instead of three to two adds more than a full percentage point on its own. Fewer decks, the right to double after splitting and an offer of surrender each trim the edge slightly. A player who guesses instead of following basic strategy pays a multiple of the published figure.
Video poker is unusual because its edge can be read straight from the pay table on the screen. Two machines with identical cards and rules can differ only in what a full house and a flush pay, and that difference alone can move the return by two or three points. A full pay table, played with the correct holds, returns close to everything staked over time. Machines with trimmed payouts look the same from a distance, so the numbers in the table are what tells them apart.
Blackjack with sound strategy often keeps under one percent, the baccarat banker bet a little over one percent, a single zero wheel about 2.7 percent and a double zero wheel about 5.3 percent.
In the rules of the table, which fix the edge before the first hand is dealt and usually take about a minute to read.
Machines with the same cards and rules can differ only in what a full house and a flush pay, and that gap alone can shift the return by two or three points.
Side bets pay big amounts on unusual hands, and those payouts are funded by an edge that dwarfs the one on the main wager at the same table.