Casino Games Explained: The Complete 101 Guide for Australian Readers
Every casino game, from a five-reel pokie to a live blackjack table, runs on the same three numbers: return to player, house edge and volatility. Once you can read them, you can tell in a minute what a game is likely to cost you, how wild the swings will be and whether your decisions change anything. This guide walks through every major game family, the maths behind it, the studios that build the games and how to try them in free demo mode.
- Every casino game has a built-in house edge. Over time the casino wins; no strategy or betting system changes that.
- Blackjack, video poker and baccarat carry the lowest edge (about 0.5–1.2%). Keno and scratch cards carry the highest.
- RTP tells you the long-run average. Volatility tells you how bumpy the road is. You need both to judge a pokie.
- Demo mode is the best free way to learn rules and features, but demo results say nothing about future real-money results.
- In Australia, online casino games cannot lawfully be offered to residents. Read the legal section before doing anything else.
Are online casino games legal in Australia?
Under the Interactive Gambling Act 2001, it is illegal for any company to offer online casino-style games, such as pokies, roulette, blackjack and online poker, to people located in Australia. The law targets operators and advertisers, not individual players, but that also means players on offshore sites have no Australian consumer protection if a withdrawal is refused.
The Australian Communications and Media Authority (ACMA) enforces the Act and regularly has offshore sites blocked. Parliament passed further reforms in August 2026 that start on 1 January 2027: they ban online keno, give ACMA stronger takedown powers and strengthen BetStop, the National Self-Exclusion Register. Licensed online wagering on sport and racing remains legal. This page is general information for adults and is not legal advice. Check the rules where you live.
Land-based venues are a separate matter. Licensed casinos, clubs and pubs across the states and territories legally run pokies and table games, and everything in this guide about RTP, house edge and volatility applies to those machines and tables too. For the law itself, the reforms commencing on 1 January 2027 and the national picture, see our guide to online gambling in Australia.
Types of casino games
Thousands of titles exist, but they all belong to a handful of families. The family tells you most of what matters: whether the result is pure chance, how fast the game runs and roughly what the house keeps.
- Pokies (slots)Reels, paylines or ways, bonus rounds. The biggest category by far. RTP usually 94–97%.Pure chance
- RouletteOne wheel, 37 or 38 pockets. The variant decides the edge: 1.35% to 5.26%.Pure chance
- BlackjackBeat the dealer to 21. Correct basic strategy brings the edge to about 0.5%.Decisions matter
- BaccaratBet on Banker, Player or Tie. Banker 1.06%, Player 1.24%, Tie over 14%.Pure chance
- Poker and video pokerCasino poker against the house, video poker against a paytable, or real poker against other players.Decisions matter
- Live dealer and game showsReal tables streamed from a studio, plus wheel-based shows with multipliers.Depends on game
- Keno, bingo, scratch cardsLottery-style draws and instant wins. Simple, fast and the most expensive per dollar bet.Pure chance
- Crash and instant gamesA multiplier climbs until it crashes; cash out before it does. Edge typically 1–3%, very fast rounds.Pure chance
RTP and house edge: the numbers that matter
Return to player (RTP) is the share of all money wagered that a game pays back over millions of rounds. House edge is the rest. A pokie with 96% RTP has a 4% house edge: on average it keeps $4 of every $100 wagered, not of every $100 deposited. Because you re-bet your wins, a $100 deposit can easily turn into $1,000 of total wagers in an evening, and the edge applies to all of it.
Two cautions. RTP is a long-run average, so a single session can land anywhere. And many modern pokies ship in several RTP versions (for example 96%, 94% and 91%); the operator picks one. The figure that counts is the one shown in the game's own help screen.
House edge by game
Share of each bet the casino keeps on average. Lower is better for the player.
How RNG games decide results
Every digital casino game is driven by a random number generator (RNG). Independent labs such as eCOGRA, iTech Labs, GLI and BMM Testlabs test the RNG and verify that the published RTP matches the maths. What the labs certify is the game, so the protection only holds if the site runs the genuine, unmodified game from the studio's servers.
- RNG runs non-stopThe software produces thousands of numbers every second, even when nobody is playing.
- You press Spin or DealThe number produced at that exact millisecond is locked in.
- Number becomes a resultIt is mapped to reel stops, a card order or a wheel pocket.
- Animation playsThe spinning reels are only a show. The result is already decided.
Online pokies
Pokies make up 80–90% of a typical online lobby. The rules take seconds to learn: choose a stake, spin, and matching symbols on a payline or adjacent reels pay according to the paytable. What separates one pokie from another is the mechanic and the volatility.
| Type | How it works | Typical volatility | Example |
|---|---|---|---|
| Classic 3-reel | One to five paylines, fruit and 7s, few or no features | Low to medium | Fire Joker |
| Video pokies | Five reels, 10–50 paylines, wilds, scatters, free spins | Any | Starburst, Book of Dead |
| Megaways | Reel heights change every spin, up to 117,649 ways to win | High | Bonanza Megaways |
| Cluster pays | Groups of touching symbols pay, winners vanish and new ones drop | Medium to high | Sweet Bonanza |
| Hold and win | Special symbols lock in place during respins, fixed mini to grand prizes | Medium to high | Lightning Link style games |
| Progressive jackpot | A slice of every bet feeds a shared prize pool | Very high | Mega Moolah |
| 3D pokies | Cinematic animation and story-driven bonus rounds | Any | Betsoft Slots3 range |
Volatility: same RTP, very different ride
Volatility (or variance) describes how a pokie hands back its RTP. A low-volatility game pays small wins often, so your balance drifts. A high-volatility game can go 50 or 100 spins paying almost nothing, then return a large multiple in one hit. Neither is "better value"; at the same RTP the long-run cost is identical. High volatility simply needs a bigger bankroll relative to the stake, and it empties a small balance faster.
Progressive jackpots deserve one extra note: the base-game RTP is usually lower (often 88–94%) because part of each bet funds the jackpot. You are paying for a tiny chance at a very large prize. More detail sits in our pokies guide.
Table games
In RNG table games the software deals and spins; in live versions a human does. The rules and the maths are the same either way.
Roulette
Roulette is pure chance, and the single most useful thing to know is that the wheel decides your cost. A European wheel has one zero and a 2.70% edge. An American wheel adds a double zero and nearly doubles the edge to 5.26%, while paying exactly the same odds. French roulette with the La Partage rule returns half of even-money bets when zero lands, which cuts the edge on those bets to 1.35%.
Betting systems such as Martingale, Fibonacci or D'Alembert change the pattern of wins and losses, not the expected result. Martingale in particular trades many small wins for an occasional loss large enough to wipe them all out, and table limits guarantee you meet it eventually.
| Variant | Pockets | House edge | Worth knowing |
|---|---|---|---|
| French | 37 (single zero) | 1.35% on even-money bets | La Partage or En Prison rule |
| European | 37 (single zero) | 2.70% | The standard online wheel |
| American | 38 (0 and 00) | 5.26% | Five-number bet is worse still at 7.89% |
| Multiplier roulette | 37 | about 2.7–2.9% | Straight-up pays 29:1 instead of 35:1 to fund random multipliers |
Blackjack
Online blackjack in Australia offers the lowest edge of any mainstream table game, provided you follow basic strategy, the mathematically correct play for every hand against every dealer card. Play by instinct and the edge climbs to 2% or more. Table rules matter just as much:
- A natural blackjack should pay 3:2. Tables paying 6:5 add about 1.4% to the house edge. Avoid them.
- Dealer stands on soft 17 is better for you than dealer hits soft 17.
- Fewer decks, doubling after a split and late surrender all help the player.
- Side bets (Perfect Pairs, 21+3) carry edges of 3–10% and insurance is a losing bet for anyone not counting cards.
Card counting does not work online: RNG games reshuffle every hand and live tables use eight decks with a deep cut.
Baccarat
Baccarat needs no decisions beyond the bet. Banker wins slightly more often, which is why it carries a 5% commission and still has the lowest edge at 1.06%. Player is close behind at 1.24%. The Tie bet, at 8:1, has an edge above 14% and is best ignored, as are the pattern "roadmaps" displayed beside the table, since past hands do not predict the next.
Poker and video poker
Three different things share the name. Casino poker (Casino Hold'em, Three Card Poker, Caribbean Stud) is played against the house with an edge of roughly 2–5%. Video poker is a single-player draw game where the paytable sets the return: a "9/6" Jacks or Better machine returns 99.54% with perfect play, while an "8/5" version of the same game drops to 97.3%. Peer-to-peer poker is played against other people, the house takes a rake, and it is the only format here where a skilled player can win over the long term.
Craps and Sic Bo
Dice games look complicated because the layout carries dozens of bets. The good ones are few: Pass Line and Don't Pass in craps (about 1.4%) and Big or Small in Sic Bo (2.78%). Most of the rest of the felt is priced at 10% or worse.
Live dealer games and game shows
Live casino games stream a real dealer, real cards and a real wheel from a studio, with optical recognition turning physical results into on-screen data. Rounds are slower than RNG games, around 40–60 an hour, which lowers the hourly cost at the same stake. Minimum bets are usually higher, and there is no demo mode because the studio costs money to run.
Game shows such as money wheels and multiplier games are the fastest-growing part of the live lobby. They are entertaining, but price them honestly: RTP typically sits between 94% and 96.5%, well below live blackjack or baccarat, and volatility is high because most of the return is locked inside rare bonus rounds.
Keno, scratch cards and crash games
Keno is a lottery-style draw: pick up to 10–15 numbers out of 80 and get paid on how many of the 20 drawn match. It is simple and sociable, and also the most expensive game in the casino, with a house edge commonly between 20% and 35%. Note that online keno is among the products banned under the Australian reforms that commence on 1 January 2027.
Scratch cards resolve in one click with RTP around 85–95%. Crash games show a multiplier rising from 1.00x until it crashes at a random point; you win if you cash out first. The edge is modest at 1–3%, but rounds last seconds, so money cycles very quickly. Many crash titles are "provably fair", meaning each result can be verified against a cryptographic hash published before the round.
Chance vs skill: where your decisions count
The old version of this page called roulette "the best casino game to win money". It is not, and no game is. What does differ between games is whether your choices affect the cost of playing.
Chance vs skill
A longer bar means your decisions matter more.
- Pokies
- Keno
- Scratch cards
- Roulette
- Baccarat
- Craps
- Casino Hold'em
- Video poker
- Blackjack
- Poker vs players
What an hour of play actually costs
House edge alone hides half the picture, because games run at very different speeds. Expected hourly cost is simply stake × rounds per hour × house edge. That is why a pokie at $1 a spin usually costs more per hour than blackjack at $5 a hand.
| Game | Stake | Rounds / hour | House edge | Expected cost / hour |
|---|---|---|---|---|
| Blackjack, basic strategy (live) | $5 | 60 | 0.5% | $1.50 |
| Video poker 9/6 | $1.25 | 400 | 0.46% | $2.30 |
| Baccarat, Banker (live) | $5 | 50 | 1.06% | $2.65 |
| European roulette (live) | $5 | 40 | 2.70% | $5.40 |
| American roulette (live) | $5 | 40 | 5.26% | $10.52 |
| Keno | $1 | 60 | 25% | $15.00 |
| Online pokie, 96% RTP | $1 | 500 | 4% | $20.00 |
These are long-run averages. Any single hour can finish well above or below them, and the higher the volatility, the wider that range.
Game providers: who builds the games
Casinos do not make their own games. They license them from studios, and the studio's name is a quick shorthand for maths style and quality. A lobby stocked by well-known, lab-certified providers is one sign of a legitimate operation; unbranded or cloned games are a warning.
| Studio | Known for | Signature titles |
|---|---|---|
| Aristocrat | Sydney-based maker of the pokies found in Australian clubs and pubs | Queen of the Nile, Big Red, Lightning Link |
| NetEnt | Polished video pokies; introduced the Avalanche mechanic in 2011 | Starburst, Gonzo's Quest, Dead or Alive |
| Play'n GO | High-volatility "book" games and grid slots | Book of Dead, Reactoonz |
| Pragmatic Play | High release volume, tumbling reels, live game shows | Sweet Bonanza, Gates of Olympus, Big Bass Bonanza |
| Big Time Gaming | Invented Megaways, since licensed to dozens of studios | Bonanza, Extra Chilli |
| Playtech | Huge catalogue and live studio. Its Marvel pokies were retired in 2017; Age of the Gods took their place | Age of the Gods, Buffalo Blitz |
| Games Global (Microgaming) | Record-setting progressive jackpot network | Mega Moolah, Immortal Romance |
| Betsoft | Cinematic 3D pokies | The Slotfather, Good Girl Bad Girl |
| Yggdrasil | Inventive mechanics and strong art direction | Vikings Go Berzerk, Valley of the Gods |
| Evolution | The dominant live dealer studio | Lightning Roulette, Crazy Time, Infinite Blackjack |
| Vivo Gaming | Live tables streamed from multiple regional studios | Live roulette, baccarat, blackjack |
Free demo games without registration
Almost every RNG game has a demo mode that runs on play credits. Studios publish demos on their own websites, and review sites host them too, so no account or deposit is needed. Demos work the same on desktop, phone and tablet because modern games are built in HTML5.
| Demo mode | Real money | |
|---|---|---|
| Cost and risk | None | Real losses are possible and, over time, expected |
| Game maths | Same RNG and RTP in certified games | Same |
| Best used for | Learning rules, testing features, gauging volatility, practising blackjack strategy | Entertainment with money you can afford to lose |
| Live dealer games | Not available | Available |
| Progressive jackpots | Usually disabled | Active |
| The catch | Losing play credits does not hurt, so people bet bigger and chase more than they would with cash | Emotions are real, and so are the consequences |
A word on a claim you may have seen, including on an earlier version of this page: that people who practise in demo mode "win 30% more often". There is no evidence for it. Practice cannot improve results in a game of pure chance. It can stop you making expensive mistakes in blackjack and video poker, and it can show you whether you even enjoy a game before any money is involved. That is reason enough to use it.
How to test a game in demo mode
- Open the help screen first and note the RTP, volatility rating and maximum win.
- Play at least 200 spins at the stake you would really use, and watch how low the balance dips.
- Count how many spins it takes to trigger the bonus round. That tells you how long a dry spell can last.
- For blackjack, keep a basic strategy chart open and play until you stop needing it.
- Remember that a good demo session predicts nothing. The next 200 spins are independent.
Staying in control
Casino games are entertainment with a price, not a way to earn money. The habits below keep the price predictable.
- Decide the amount and the time before you start, and stop when either runs out.
- Use deposit limits, loss limits and reality-check reminders wherever they are offered.
- Never chase losses. The next bet has the same house edge as the last one.
- Do not gamble when stressed, upset, tired or drinking.
- Never gamble with borrowed money or money meant for bills.
Gambling Help Online: 1800 858 858 · gamblinghelponline.org.au
BetStop, the National Self-Exclusion Register: betstop.gov.au
More options on our Support Resources page.
Frequently asked questions
Which casino game has the best odds?
Blackjack played with basic strategy (about 0.5% house edge), full-pay video poker (about 0.5%) and the Banker bet in baccarat (1.06%). All still favour the house over time.
What is a good RTP for a pokie?
96% or higher is the usual benchmark online. Below 94% is poor. Always check the figure inside the game's help screen, because operators can choose between several RTP versions of the same title.
Are online casino games rigged?
Certified games from established studios are tested by independent labs and cannot be altered by the casino. The risk lies with unlicensed sites running pirated copies of games, where no such guarantee exists.
Is it legal to play online casino games in Australia?
The Interactive Gambling Act 2001 makes it illegal to offer online casino games to people in Australia. It penalises operators rather than players, but players on offshore sites have no local protection if something goes wrong. Reforms starting on 1 January 2027 tighten enforcement further.
Can a betting system beat roulette?
No. Systems rearrange when you win and lose, but every spin carries the same house edge, so the expected result does not change.
What is the difference between RTP and volatility?
RTP is how much a game returns on average over the long run. Volatility is how that return is distributed: frequent small wins (low) or rare large ones (high).
Do demo games work the same as real-money games?
In certified games, yes: the demo uses the same RNG and maths. The differences are that progressive jackpots are usually switched off and live dealer games have no demo.
Are gambling winnings taxed in Australia?
For recreational players, gambling winnings are generally not treated as taxable income in Australia. Professional gamblers may be treated differently. This is general information, not tax advice.
Can I play casino games on my phone?
Yes. Modern games are built in HTML5 and run in any mobile browser without a download. Portrait-mode pokies and live tables are designed for one-handed play.
Game guides on this site
Each game above has its own page with the maths, the tables and where the casinos we review actually deal it:
- Online pokies — best pokies sites, real money pokies, free pokies, Aristocrat pokies, best paying pokies, jackpots
- Blackjack, roulette (with the payout chart), baccarat, craps
- Online poker — the one real poker room and the law; poker card games — Caribbean Stud, Three Card, Pai Gow with their house edge; video poker — returns by paytable
- Keno, scratch cards, bingo, sic bo, Casino Hold'em
- Live dealer games and playing on a phone
Two more pages belong with the guides above: the printed returns of 2,199 games across eight lobbies, which puts every game type on one scale, and what the ATO says about a win. For the newest titles and the Megaways mechanic, see new pokies and Megaways pokies.