US commercial operators won $78.72 billion in calendar year 2025, according to the American Gaming Association, up 9.2% with all 38 commercial markets growing. In Britain, the UK Gambling Commission put online casino games at £5.0 billion for the year to March 2025, of which £4.2 billion came from slots alone.

Where I Got This Information

I pulled the Nevada Gaming Control Board’s December 2025 revenue report instead, which records what 456 licensees actually kept across 126,040 slot machines and every table on the floor, and the gap between the theory and the filings turns out to be the most useful thing on this page.

Casino games divide into three recognised categories: gaming machines, table games and random number games. The split is functional rather than cosmetic. It describes what generates the result, a machine, a dealer with cards or dice, or a draw from a pool of numbers, and that decides how the house builds its edge.

• Gaming machines: a player stakes and a device selects the outcome, no dealer involved.
• Table games: a dealer runs a game of cards, dice or a wheel for several players.
• Random number games: numbers are drawn from a pool against pre-bought tickets.

And that is where the standard taxonomy runs out. It was written for a physical floor, and it has no slot for a croupier streamed live from a studio to thousands of simultaneous players, or for a game whose entire mechanic is a rising multiplier you have to cash out of before it breaks. Two more categories belong on the list: live dealer and game shows, and crash and novel formats.

What surprised me reading studio release schedules is how much of the live category is not casino gaming at all, but televised prize formats wearing a wheel.

Gaming machines

Gaming machines pull the outcome from a random number generator, with a certified paytable doing the rest. Slots dominate the category and the floor: Nevada licensees ran 126,040 slot units in 2025 against a few thousand table units. Video poker belongs here too, despite the cards: the deal comes from a machine, not a dealer. The reels, paylines and payout structures behind them are covered separately.

Table games

Table games split by equipment. Card-based tables cover blackjack, baccarat, three-card poker, Ultimate Texas Hold’em and pai gow poker, all built on the same 52-card deck and each holding a different amount once side bets are attached. Dice games cover craps and sic bo, with roulette alongside as the wheel game. Baccarat is the revenue giant of this group. Not blackjack.

Random number games

Random number games draw from a pool, and nobody acts once the draw starts. Bingo and keno are the casino versions, lotteries and scratchcards the retail ones. Draw-based games stay enormous outside the casino: the UK Gambling Commission put lotteries at 25% of total British market share in the year to March 2025, with remote bingo adding £165.6 million. The house take is structural: the prize pool is a fixed share of ticket sales.

Live dealer and game shows

Live dealer puts a real croupier in front of a camera and lets unlimited remote players bet on one shoe, wheel or deal. The blackjack, baccarat and roulette variants are table games with a video layer. The game show formats are something else: money wheels, giant prize machines and multiplier segments built by studios such as Evolution and Pragmatic Play, priced closer to a television format than a pit game. Their edge sits inside bonus rounds rather than base rules.

Crash and novel formats

Crash games came out of crypto casinos and stayed. A multiplier climbs from 1x and the player chooses when to cash out, with the round ending at a point the generator picked in advance. Around it: plinko, mines, dice, tower climbs and the fish tables imported from Asian gaming halls. This arcade category is where provably fair verification first appeared, because these games sell themselves on the player checking the result. None of it maps onto machines, tables or draws.

Slot machines won $10.71 billion in Nevada during calendar year 2025, against $5.08 billion for every table game in the state combined. The UK Gambling Commission recorded £5.0 billion of online casino gross gambling yield in the year to March 2025, and £4.2 billion of that came from slots alone.

How a slot decides an outcome

A random number generator runs constantly inside the machine, cycling through values thousands of times a second. Pressing spin takes whatever number sits in the generator at that instant and maps it to a reel position. Everything after that is animation.

Nothing carries over between spins. A machine that has paid nothing for six hours sits in the same state as one that just dropped a jackpot. Online games expose the same principle through cryptographic seeds that let a player confirm a result was fixed before the bet landed.

RTP and the legal minimum

Return to player is the long-run share of wagers a game is built to pay back, and in licensed markets it is a legal floor. Nevada Regulation 14.040(1)(a) requires a slot to “pay out a mathematically demonstrable percentage of all amounts wagered, which must not be less than 75 percent for each wager available for play on the device.”

New Jersey sets a higher bar. N.J.A.C. 13:69E-1.28A states that “each slot machine game which requires a wager shall have a theoretical return to player (RTP) equal to or greater than 83 percent.” The same code also caps design: slot machines “shall not offer a play with odds greater than 100 million to 1.”

What Nevada slots actually hold

Actual hold is what the house kept in practice, not theoretical RTP. I have pulled the Nevada Gaming Control Board’s December 2025 revenue report, covering 456 licensees and 126,040 slot units, to break it down by denomination.

Why the penny machine is the expensive one

Penny slots held 9.09 percent while $5 slots held 4.86 percent, so the cheapest machine on the floor is close to twice as expensive per dollar wagered.

The denomination is the unit, not the wager. A penny game runs dozens of lines with multipliers stacked on top, so a maximum spin costs several dollars and cycles far more money through a heavier hold.

And the floor is arranged accordingly. Nevada counted 31,434 penny units against 432 $5 units, roughly 73 to 1 in favor of the machine that holds the most. Not player taste. Inventory planning. The paytable is the counterweight, and our guide to working out what a paytable is really telling you goes through it.

Volatility, and why two 96 percent games feel nothing alike

Volatility describes how a game distributes its returns, not how much it returns. Two slots can carry an identical RTP and deliver opposite sessions.

A low-volatility game pays small amounts frequently. A high-volatility game withholds for long stretches and concentrates its return into rare large hits, which means the published RTP may only be realized across a sample of spins far larger than any single player will ever produce in a lifetime of play. Same arithmetic. Very different hour.

The main slot formats

Classic three-reel games carry a handful of paylines and a short symbol set. Video slots moved to five reels and screen-drawn symbols, freeing designers to add scatters, free-spin rounds and bonus screens.

Progressive jackpots divert a slice of every qualifying bet into a prize that grows until somebody takes it, sometimes across a whole network of casinos, and our explainer covers how a shared jackpot pool builds and pays out. Megaways titles vary the symbol count on each reel every spin, so the ways to win change round by round.

Where the machine came from

The first documented gambling machine came from Sittman and Pitt in Brooklyn in 1893, a poker-themed device with five drums and no automatic payout. Charles Fey built the Liberty Bell in San Francisco between 1887 and 1895, cutting the reels to three so it could pay coins by itself.

Bally’s Money Honey arrived in 1963 as the first fully electromechanical slot, the first video slot followed in 1976, and WMS put the first second-screen bonus round into Reel ‘Em In in 1996.

Video poker, the skill-adjacent machine

Video poker sits in the same cabinet as a slot but does not behave like one. Five cards are dealt, you choose which to hold, the discards are replaced from the same deck, and the paytable is visible before you bet.

Two players on identical machines dealt identical cards will not return the same amount over a year, and the gap is strategy rather than luck. Our breakdown of the hold decisions behind each paytable covers the main variants, and the full guide to playing slots online covers the wider catalogue.

Nevada’s table games won $5.08 billion in calendar year 2025. Mini-baccarat kept 12.01% of the money crossing the felt. 3-Card Poker kept 31.45%.

Those are actual hold figures, not house edge. House edge is theory: the expectation of one wager repeated forever. Hold is history, what the Nevada Gaming Control Board recorded as still sitting in the tray after a year of real play, measured against the drop rather than the total handle those chips generated as they were bet and rebet.

A blackjack game whose theoretical edge sits under 1% against perfect strategy still posts a 12.86% hold, because most players do not play perfectly and every dollar of drop gets wagered several times. I pulled the CY2025 figures below from the Board’s December report.

Why baccarat out-earns blackjack

Baccarat out-earns blackjack in Nevada. 421 baccarat units produced $1.44bn. 1,947 blackjack units produced $1.20bn. That is about $3.4m per baccarat table a year against roughly $616,000 per blackjack table.

Baccarat is the high-roller game, played in private salons at minimums that run into five figures. Blackjack earns its total from footfall, spread across hundreds of tables at $10 and $25.

Blackjack

Blackjack is the skill outlier, the one game where player decisions move the mathematics. You take two cards against the dealer’s single exposed card and try to finish closer to 21 without busting. Hit, stand, double, split, surrender: each has a correct answer set by your total and the dealer’s up card, and our breakdown of blackjack rules and decision tables sets them out.

Baccarat

Baccarat carries the lowest permitted house-edge figures on the main floor, 1.06% on banker and 1.24% on player.

Two hands are dealt, banker and player, and you back whichever lands closer to nine. Nothing else. The drawing rules are fixed and the dealer executes them, which suits people betting enormous sums who want speed without decisions. Banker wins slightly more often, so the house takes a commission.

Roulette

Roulette’s house edge is the easiest figure in the building to derive yourself.

A single-zero wheel has 37 pockets. A straight-up number pays 35 to 1 where true odds are 36 to 1, and that one-pocket shortfall is 1/37, or 2.70%. Add a second green pocket and you have 38 slots paying the same 35 to 1, so the gap becomes 2/38, or 5.26%. Same game, nearly double the cost.

Records attribute a primitive form of the wheel to Blaise Pascal in the 17th century, from his perpetual-motion experiments, with the modern game documented in Paris by 1796. Francois and Louis Blanc introduced the single-zero wheel at Bad Homburg in 1843, while the double-zero American version spread up the Mississippi. Nevada’s 424 tables held 19.00% last year. How the wheel is built and balanced explains the pocket layout, and our guide to roulette bets and odds covers the felt.

Craps

Craps is the loudest game on any floor, and its pass line bet carries a 1.41% edge.

A shooter throws two dice: the pass line wins on 7 or 11 on the come-out, loses on 2, 3 or 12, and otherwise sets a point that must repeat before a 7 appears. Everyone on the line wins and loses together. Nevada’s 319 craps tables still held 15.89%, and the centre of the layout is why: one-roll propositions that pay big and land rarely. Our walkthrough of the craps layout maps which is which.

Carnival and Poker-Derived Games

Carnival games take poker’s hand rankings and rebuild them as house-banked games with fixed paytables.

3-Card Poker is the biggest at $99.2m and 31.45% hold, close to two and a half times blackjack’s 12.86%. Ultimate Texas Hold’em took $217.5m at 22.48%, pai gow poker $118.7m at 20.70%, Let It Ride $12.8m at 25.63%. Caribbean Stud follows the same shape: ante, raise, paytable, progressive side bet. You do not play other players in any of them, the entire difference between these and the poker room. The rest of the pit sits in our card games category.

But no carnival ante carries a theoretical edge anywhere near 31%, so the work is done by the optional side bets (Pair Plus, six-card bonus, trips, each priced above the base wager) and by the measurement itself, since a player who buys in for $200, plays through it four times and leaves empty-handed registers as 100% hold.

Sic Bo and Dragon Tiger

Sic bo and Dragon Tiger are the Asian-market staples of the live studio floor.

Sic bo shakes three dice under a cover and pays on totals, doubles, triples and combinations, with payouts up to 180 to 1 on a named triple. Dragon Tiger is baccarat stripped to bone: one card to Dragon, one to Tiger, higher card takes it, roughly ten seconds a hand. The sic bo betting grid and the Dragon Tiger rules are covered elsewhere.

Random number games are the third leg of the classic casino taxonomy, and the one most guides treat as an afterthought. Two of them post the worst actual hold on the entire floor.

Keno held 27.86% in Nevada in calendar 2025. Bingo held 21.16%. Set those against 14.41% for all table games and 7.13% for all slots: a dollar run through a keno board costs roughly four times what the same dollar costs in a slot machine. I have not seen that comparison published anywhere.

Online, the numbers flip

Online, the picture is different. The UK Gambling Commission recorded £165.6m in remote bingo gross gambling yield for the year to March 2025, against £5.0bn for online casino games.

But lotteries are 25% of the entire Great Britain market, about £4.2bn of a £16.8bn total. The lottery and number games category collects them.

Keno

Keno runs like a lottery draw every few minutes, and it posts the highest hold of any game Nevada reports.

You mark a set of numbers, usually one to fifteen, on a board of 80. The house draws 20 and pays you on how many of your picks appear. Nothing more. Nevada’s keno win was $16.4m at 27.86%. It suits players who want something slow, on a ticket that costs a dollar and can pay thousands. Keno paytables and pick sizes sit elsewhere.

Bingo

Bingo is a social product first and a gambling product second.

Players buy cards, numbers are called at random, and the first card completing a defined pattern takes a share of a pool fixed in advance. The 75-ball game, on a 5×5 grid with patterns and a free centre square, dominates North America. The 90-ball game, on a 3×9 ticket paying one line, two lines and a full house, dominates Britain and much of Europe. Online it kept the chat rooms and the callers. Nevada’s bingo hold was 21.16% on $47.4m. Our guide to bingo ticket formats covers both.

Lotteries and Scratch Cards

Lotteries and scratch cards are instant-win mechanics built on fixed prize pools, and by market share the largest gambling category in Britain.

A draw lottery returns a defined proportion of sales as prizes, the rest going to the operator, good causes and tax. Scratch cards front-load the same structure. A print run contains a known number of winners at each prize level, so every card sold is a draw from a finite pool settled at manufacture, which means nothing about the ticket in your hand is random. You are only finding out which one you bought.

Why These Games Hold So Much

Long odds and big top prizes are the whole explanation.

A game advertising a five-figure payout on a one-dollar ticket has to fund that prize from somewhere, and it does that by concentrating almost the entire return into outcomes that the overwhelming majority of players will never reach in a lifetime of buying tickets. Blackjack returns its money in small, frequent increments. Keno returns a large share of its annual payout to a handful of tickets, which leaves the median player with a long run of small losses.

These are entertainment products with a high cost of play. A lottery ticket and an hour on a bingo site are cheap fun if fun is what you want, and expensive if you expect them to pay for anything. They do not deserve the sneer they get from serious players, and they do not deserve a pass either. The mechanics of casino revenue make the same point.

Arcade games are where a modern casino lobby stops looking like a casino. Fish tables, crash curves and peg boards take their visual language from video games rather than from a felt layout or a reel strip, and when I went looking for serious coverage of them I found almost none. Most of the category is barely a decade old in regulated markets.

Fish table games

Fish tables are shooting cabinets. Several players sit around a shared screen, aim a cannon at fish swimming across it, and spend credits on every shot fired, with the payout scaled to the size and rarity of whatever they hit.

The format is generally traced to arcade machines in China and Taiwan in the early 2000s, spreading through Southeast Asian arcades and reaching US venues during the 2010s. That lineage comes from trade coverage, not a regulatory filing.

Where the skill argument breaks down

What makes them awkward is the aiming. Target selection and timing feed into the result, which means a fish table is not purely a game of chance in the way a slot is, and that ambiguity is why the format sits in an unsettled regulatory position across several US markets. Our walkthrough of how fish shooters price each shot covers the mechanics.

Crash games

A crash game gives you exactly one decision. A multiplier starts at 1.00x and climbs along a curve, your stake climbs with it, and at a randomly determined point the curve crashes. Cash out first and the multiplier is yours. Leave it a beat too long and the round pays nothing.

Most crash titles run on a provably fair model. The server commits to a hashed seed before the round starts, the player contributes a seed of their own, and the combined value can be recomputed afterwards to confirm the crash point was locked in before anyone placed a bet. Verification is the entire appeal of the format, and our explainer on how a crash curve is generated and checked walks a single round from seed to cash-out.

Rounds last seconds, which makes crash the fastest-cycling product in most lobbies. Published return figures exist for some titles and not others, so I will not quote a range here.

Plinko

Plinko drops a ball from the top of a triangular peg board. The ball deflects left or right at every peg it strikes and lands in one of the multiplier buckets along the bottom, with the largest multipliers at the outer edges and the smallest in the middle, which is where most balls finish. No decisions once the ball is falling.

The risk setting is the control worth understanding. Raising it stretches the distribution, pushing the edge buckets higher and the center buckets lower, so the same board can be tuned from a slow grind to something violent without moving a single peg. Row count does something similar. Our breakdown of a Plinko board’s multiplier spread shows the shapes.

Arcade and instant-win games

The arcade tab is a catch-all. Mines, dice, wheels, hi-lo and scratch-style instant wins all land there, unified by short rounds and rules you learn in one sitting.

These games are newer than slots, they are licensed under thinner rulebooks in some markets, and their published return figures are patchier than the numbers a slot supplier files with a gaming board. Anyone treating an arcade title as equivalent to a regulated reel game is making an assumption the paperwork does not support.

But they are also the fastest-growing shelf in most lobbies, and the rest of the arcade catalogue is where the newest formats tend to appear first.

Live dealer games stream a real person dealing real cards from a real shoe, or spinning a real wheel, while your bets go in through software on your screen. The game maths matches the land-based version exactly. The delivery does not.

The Technology Behind Shared Studios

Evolution, Pragmatic Play and Playtech run purpose-built broadcast floors with camera rigs, controlled lighting and optical character recognition that reads each card as it leaves the shoe, then lease those tables out to operators who brand the interface and change nothing about the game underneath it.

Which means the blackjack table you sit down at on one site is frequently the same physical table someone else is playing from a completely different brand. Same dealer, same shoe, different logo in the corner.

Live Game Shows vs. Traditional Table Games

Live game shows borrow the furniture of a table game and almost none of its structure. A presenter on a set, a money wheel or some physical bonus device, a wide spread of accepted bet sizes, and multipliers that swing from small to enormous depending on where the wheel stops.

A table game hands you a fixed set of wagers with fixed returns and a rulebook that does not move. A game show puts entertainment first and a variable payout second, which is why the bet spread runs so wide: the same round can take a minimum stake or a serious one, and what you win rides on a bonus round rather than on the rank of a hand. Our breakdown of the live game show category goes into the individual titles.

Transparency and the Trust Factor

And live dealer solved a problem that a decade of argument about randomness never did. A player who never trusted a random number generator he could not see could suddenly watch the card come off the shoe on camera, alongside other people betting on the same hand. The testing regime behind certified RNG software is rigorous, as our explainer on how the machinery behind an online casino actually works lays out. Rigorous is not the same thing as visible, and live dealer made it visible.

Game Pace and Bankroll Economics

What surprised me when I started timing tables is how much the pace changes the economics. A live table deals far fewer hands per hour than an RNG table, where the next hand appears the instant you click.

Fewer decisions per hour means less money passing under the house edge per hour, so your theoretical loss for a two-hour session drops without the odds on any single hand improving. The trade is cost: a staffed studio table is expensive to run, so minimums sit higher and a small bankroll stretches less far. Our guide to the operators running the strongest live tables covers who does it well.

Baccarat and blackjack return the most money to players of any table game. Nevada casinos kept 12.01% of everything wagered at mini-baccarat and 12.86% at blackjack across 2025, against 31.45% at 3-Card Poker. Craps carries the lowest single wager: the pass line, at 1.41%.

The table below sorts each major game by what Nevada casinos actually kept in calendar year 2025, the figure the Gaming Control Board publishes monthly.

Why theory and hold disagree

Two rows look wrong until you see what each column measures. Craps carries one of the cheapest wagers in the building at 1.41%, yet Nevada craps tables held 15.89%, and roulette held 19.00% on a wheel whose arithmetic gives the house 2.70% per spin on a single zero and 5.26% on a double zero.

Theoretical edge is the expected cost of one wager, made once, played correctly. Actual hold is casino win divided by every dollar that crossed the table, and that money includes side bets nobody prices, blackjack mistakes a basic-strategy player would not make, proposition bets thrown down between rolls at craps, and above all the same bankroll wagered again and again until it is gone.

So a player who makes only pass-line bets at craps is not facing 15.89%. He faces 1.41% per resolution, and the gap between those two numbers describes the other people at that table, not him. Their side bets, their mistakes, their chasing. I have not seen that stated plainly elsewhere. House edge is a property of the bet. Hold is a property of the behaviour. Our breakdown of where casino revenue actually comes from follows the money.

Which games have the worst odds

Keno and 3-Card Poker sit at the bottom, holding 27.86% and 31.45% respectively in Nevada last year.

Keno is priced like a lottery draw rather than a table game. No decision beyond how many spots to mark, no strategy adjustment, no better-paying version waiting at another property. Our walkthrough of how keno pays shows where the money goes.

3-Card Poker is a different problem. The base game is not the expensive part. The optional side bets are, and because they resolve on every hand they compound fast, which is how a game that feels like poker ends up holding more than double what blackjack holds.

Can you beat the house edge?

The honest answer is no, not over time, and anyone promising otherwise is selling something. The edge is built into the payout structure, not the casino’s luck, and it does not care how your session has been going.

But the exceptions are real. Card counting at blackjack, advantage play on a few poker-based games, and full-pay video poker at perfect accuracy can each push expected return past break-even under narrow conditions: specific rule sets, specific pay tables, thousands of hands without error, and a bankroll deep enough to ride the swings. Casinos watch for all of it and are free to refuse action. For the mechanics rather than the mythology, start with our guide to blackjack rules and strategy.

The right game depends on whether you are playing for quick wins or a long session. Balance volatility against pace, and size both against your bankroll.

Volatility: payout pace against session length

Most games sit at one end of the volatility scale or the other, and a few land in between.

• Low volatility, such as even-money table bets and low-variance slots: frequent small wins that stretch a modest bankroll with minimal swings.
• High volatility, such as jackpot slots: the top prize is funded by withholding the smaller payouts. You trade session length for a shot at a big multiplier.

Stake size and game speed

Your wager sets how much you can win and, more to the point, how fast you can lose. At $5 a hand a bankroll lasts four times longer than at $20.

Speed matters just as much. A slot resolves in seconds while a live table takes a minute or more, so the same money runs out far quicker on the reels than at the felt.

Skill against chance

Some games answer to strategy. Most do not.

• Skill-based, blackjack and video poker: learning correct play directly improves your expected return.
• Pure chance, slots, roulette and keno: once the bet is placed there is nothing you can do.

Test drive in demo mode

Use free-play demo modes first where the casino offers them. You learn the volatility and the bonus mechanics without paying for the lesson.

Responsible gambling notice

Never gamble more than you can afford to lose. Set a limit before you open a lobby and walk away when it runs out. Chasing losses is the fastest way to turn a good night into a real problem.

If gambling stops being fun, or you feel out of control, our Staying in Control page covers deposit limits, self-exclusion tools and free support services.