Casino Games: Slots, Blackjack, Roulette
Every casino game is built so the house wins over time. The question is how fast. Slots are where New Jersey casinos make most of their money, and they are also the game with the least visible math.
Slots
View as table
| Game type | 2025 casino win | Share |
|---|---|---|
| Slots | $2.13 billion | 73.6% |
| Table games | $762.5 million | 26.4% |
"Casino win" is the money players lost, not profit. Shares are our own arithmetic from the reported totals ($2.13 billion and $762.5 million). Online casino play, another $2.91 billion in 2025, is counted separately on The Numbers.
What the law says
New Jersey requires every slot machine to return at least 83% of what's played over time (N.J.S.A. 5:12-100(e); N.J.A.C. 13:69E-1.28A). That means the casino is allowed to keep up to 17 cents of every dollar. That is the legal limit, not a typical figure. The state does not require casinos to post a machine's actual payback on the machine, so you can't see it from the floor.
How this is calculated
Each round you bet everything you have left, and on average you get back 83 cents per dollar: $100 × 0.83 = $83, then $83 × 0.83, and so on. This is an average. Any single session can end up or down, but the more you bet, the more the average takes over.
How slots are built to keep you playing
Researchers have studied this for decades. What they have found:
- Near misses. Two cherries and a third just off the line feel like almost winning, but the machine counts it as a loss. A review of 51 studies (Barton et al., 2017, Journal of Gambling Studies) found near misses motivated people to keep playing and led them to overestimate how much they had won.
- Losses disguised as wins. You bet 75 cents, get 30 cents back, and the machine plays the same lights and sounds as for a win. The same review found these inflate players' estimates of their winnings, and that players preferred multi-line machines that produce them.
- Pull of continuous play. In a lab study of 110 slot players (Kruger, Dixon and colleagues, 2022), 75.5% preferred the multi-line game, and the "dark flow" state of absorbed play explained additional problem-gambling severity beyond depression, mindfulness, and boredom. That study used simulators, not casino floors.
- The "zone." Anthropologist Natasha Dow Schüll, who spent years studying machine gamblers, says people describe it as an escape where nothing else matters, and that it's often "not about the money." She also estimates that problem gamblers generate 30 to 60 percent of revenue for the machine-gambling business. That figure is her estimate, not an official count.
None of this means the machines are cheating. They have to meet the payback minimum above, and state rules bar a machine from making a hidden second decision that changes the result it shows you. The point is that the game's design is meant to keep you playing, and the math says that, played long enough, you lose.
If slots were your game
- There is no skill and no system. Nothing you do changes the odds, and you can't tell a "hot" machine from a cold one.
- "Almost winning" is not a signal that a win is close.
- Self-exclusion covers Atlantic City casinos and online casinos. See how it works.
Table games: blackjack, roulette, craps, baccarat
Table games have a lower house edge than slots, and the edge is published, but that doesn't make them safe. The edge applies to every dollar bet, and tables can be played fast with large bets. The chart below shows what the house expects to keep per $100 bet.
View as table
| Game | House edge | Condition |
|---|---|---|
| Blackjack | about 0.5% | Perfect basic strategy, standard 3:2 payout |
| Baccarat, banker | 1.01% to 1.06% | Depends on number of decks |
| Craps, pass line | 1.41% | |
| European roulette | 2.70% | All bets |
| American roulette | 5.26% | All bets except the five-number bet (7.89%) |
| Slots (NJ) | up to 17% | Legal maximum; actual payback by machine isn't shown to players |
Low edge only if you play basic strategy perfectly. Check the payout on a blackjack: tables that pay 6:5 instead of 3:2 raise the house edge by about 1.39 percentage points (Wizard of Odds).
American wheels have 38 slots (1 to 36 plus 0 and 00). Every bet has the same 5.26% edge, except the five-number bet (0, 00, 1, 2, 3) at 7.89%. No betting pattern changes it. Each spin is independent, so a color or number being "due" is a myth.
The best bets are cheap on paper (craps pass line 1.41%, baccarat banker about 1.06%). The traps are the side bets: the baccarat tie bet costs about 14.4% to 15.8% depending on decks.
Keno is commonly cited as having a house edge of 20% to 40%, which is worse than almost anything else on the floor.
The honest takeaway: "best odds" still means a loss on average. A 0.5% edge only helps if you play perfectly, and the more you bet, the more the edge adds up.
Poker
Poker is different from the games above. You play against other people, not the house, and skill really matters. But the casino or poker site still gets paid on every hand through the rake, a cut taken from each pot. You have to beat the other players and the rake.
In a Las Vegas analysis of $1/$2 no-limit hold'em, the room took 10% of each pot up to a $4 maximum, averaging about $2.16 per hand. That works out to roughly $9.86 an hour per player. The author estimates an average player at those stakes loses about five big blinds an hour to rake alone, so to come out ahead you have to be much better than average. That is one author's analysis of live Las Vegas games, and online rake in NJ is set differently.
More detail
The same analysis found 25–30% of players winning on raw results, and that far more players would be winners if there were no rake (roughly 31% to 51% depending on stakes). Raw results overstate winners because small samples include lucky players, which is why the adjusted numbers are lower.
Poker players chase losses too. In the Gainsbury survey, casino-game players chased more than poker players, but poker players weren't immune. More than one in four internet gamblers overall said they would likely chase. A bad beat feels unfair, and "I just need one good hand to get even" is the same trap described on The Harm.
Betting systems and "doubling up"
The best-known system is the Martingale: after every loss, double your bet, so one win recovers everything plus one unit. It sounds airtight because a win always comes eventually. It fails because the bets grow faster than any bankroll or table maximum.
How this is calculated
| Losses in a row | Chance of that streak | Next bet needed | Total lost so far |
|---|---|---|---|
| 3 | 14.6% (about 1 in 7) | $80 | $70 |
| 5 | 4.0% (about 1 in 25) | $320 | $310 |
| 7 | 1.1% (about 1 in 89) | $1,280 | $1,270 |
| 10 | 0.16% | $10,240 | $10,230 |
Chance of each streak = (20/38) to the power of the number of losses. Each win only returns the starting $10, while one bad streak can wipe out hundreds of them.
Even before you hit a limit, the system doesn't change the odds. The house edge still applies to every dollar bet, and doubling just means betting more dollars. No pattern of bet sizes, colors, or "due" numbers changes what each spin is worth.
How many New Jersey adults play them
In the 2023 Rutgers prevalence study, among adults who gambled in the past year, 24.6% played gaming machines such as slots and video poker, and 20.2% played live casino table games (Table 7). The report also notes that high-risk gamblers engaged in more activities across the board.
Sources
- iGaming Business: New Jersey gambling revenue record 2025 (Atlantic City slots $2.13 billion, tables $762.5 million)
- N.J.S.A. 5:12-100(e): slot machine minimum payout of 83%
- N.J.A.C. 13:69E-1.28A: standards for approval of a slot machine game
- Barton et al. (2017): effect of losses disguised as wins and near misses, Journal of Gambling Studies 33(4)
- Kruger et al.: Contrasting mind-wandering, (dark) flow, and affect during multiline and single-line slot machine play, Journal of Gambling Studies (2022)
- MIT News: Understanding gambling addiction (Natasha Dow Schüll, 2012)
- Wizard of Odds: roulette basics and blackjack variants (6:5 payout)
- Casino.org: house edge by game (blackjack, craps, baccarat, keno)
- PokerNews: The impact of rake in low-stakes cash games (Las Vegas $1/$2 and $2/$5 analysis)
- GipsyTeam: How many winning cash-game players are there? It depends on rake (Dec 2025, community analysis)
- Gainsbury, Suhonen, and Saastamoinen (2014): Chasing losses in online poker and casino games, Psychiatry Research 217(3)
- Rutgers Center for Gambling Studies (2023), Table 7
Last checked: October 1, 2026. House edges are long-run averages, not predictions for any one session.