Game Rules and Odds
Casino games are built so the house has a mathematical advantage over time. These pages explain the basic rules and the well-established house-edge figures for common games.
The house edge is the long-run share of each wager that the game is designed to keep, assuming the published rules. It is not a prediction of what will happen in a short session. A low house-edge game can still produce large short-term losses.
We use only well-established mathematical figures, such as the house edge on standard European roulette (2.70%) and American roulette (5.26%). Where the exact edge depends on rules or pay tables, we say so instead of inventing a single number. Licensed U.S. operators may publish a theoretical return-to-player (RTP) figure for some games; if they do, that figure is the place to look.
Blackjack
Basic rules, why strategy matters, and how rule changes affect the edge.
Roulette
European 2.70% and American 5.26% house edge, explained.
Slots
Why there is no single house edge and what RTP means.
Poker
Player-versus-player play, the rake, and where online poker is licensed.
Baccarat
Banker, player, and tie bets and their standard edges.
Craps
Pass line, don't pass, and why some bets are much worse.
These guides do not teach you how to beat the house. No published system overcomes the built-in edge on house-banked games. If you choose to gamble in a licensed market, only use money you can afford to lose, and use the tools on our responsible gambling page.