Keno charges more than any other game in the casino, and the number that decides how much is the one thing the screen never shows you. The draw itself is fixed mathematics. Eighty numbers sit in the machine, twenty of them come out, and that is true at every casino on earth.
So the odds of a keno ticket are identical everywhere. What differs from one game to the next is the pay table, and the pay table is the entire price. Two games that look the same on screen can return 64 cents or 80 cents on the euro.
That is why keno sits at the bottom of the house edge table on this site, charging 20 to 35 percent while blackjack charges 0.43. The spread inside that range is not luck. It is a design decision somebody made, and you can read it off the pay table in about a minute.
Every figure below is arithmetic you can repeat yourself. No casino has paid to appear here.
The Odds Never Change
A keno machine holds 80 numbers and draws 20 of them. You mark somewhere between one and fifteen, and the game counts how many of yours appear. Those probabilities come from the draw, never from the operator.
One figure is worth memorizing. Twenty numbers out of eighty is one in four, so you will catch a quarter of your marks on average, whatever you mark. Pick four and expect one catch. Pick twenty and expect five.
| Numbers I mark | Catches I should expect | Catching half or more | Catching every one |
|---|---|---|---|
| 2 | 0.5 | 1 in 2 | 1 in 17 |
| 4 | 1.0 | 1 in 4 | 1 in 326 |
| 6 | 1.5 | 1 in 6 | 1 in 7,753 |
| 8 | 2.0 | 1 in 10 | 1 in 230,115 |
| 10 | 2.5 | 1 in 15 | 1 in 8,911,711 |
| 15 | 3.75 | 1 in 114 | 1 in 428 billion |
| 20 | 5.0 | 1 in 211 | 1 in 3,535,316,142,212,174,320 |
Every figure comes from the same calculation: how many ways your marks can land among the twenty drawn numbers, divided by how many ways twenty numbers can be drawn from eighty. Nothing in it depends on which casino runs the game.
Everything below is about what the pay table does to the price. The procedure for reading one before you stake anything, and what a single row on it is worth across a thousand euros of turnover, are set out in the keno tips and tricks guide.
The Pay Table Is the Whole Price
Because the odds are fixed, the only thing left to set is what each catch pays. Multiply every catch probability by its payout, add the results together, and you have the return. That is the whole calculation, and it takes a minute.
Take a four spot ticket where two catches pay one unit and three catches pay five. The only number still open is what four catches pays. Watch what that single figure does to the price.
| Four catches pay | Returned on each €1 staked | House edge |
|---|---|---|
| 70 | €0.64 | 35.7% |
| 80 | €0.67 | 32.6% |
| 90 | €0.70 | 29.5% |
| 100 | €0.74 | 26.5% |
| 110 | €0.77 | 23.4% |
| 120 | €0.80 | 20.4% |
The two smaller prizes stay at 1 and 5 in every row. Only the top prize moves, and on its own it swings the price of the ticket by fifteen percentage points.
That span covers the whole published range for keno. The difference between the cheapest keno in the building and the dearest comes down to one number, in one row, of one table.
Picking More Numbers Does Not Buy You More
The instinct is to mark more numbers, because more marks feel like more chances. The arithmetic disagrees. You still catch a quarter of whatever you mark, so a ten spot ticket is not four times better than a two spot ticket.
What actually changes is where the money sits. A four spot ticket returns something roughly one time in four. A ten spot ticket returns something roughly one time in fifteen, and the money it holds back is parked in a prize that lands once in 8,911,711 tickets.
Marking more numbers does not raise what the game gives back. It lengthens the dry runs and moves your money toward an outcome you will almost certainly never see.
Keno Clears a Bonus Fastest, and That Is the Trap
Here is the part no keno guide mentions. At several of the casinos I have reviewed, keno counts 100 percent toward bonus wagering, sitting in the same bracket as slots, while table and card games count 10 percent or less.
Say the requirement is €2,000. Clear it on keno and you stake €2,000 on a game charging 20 to 35 percent, so the expected cost is €400 to €700. Clear it on blackjack at 10 percent weighting and you need €20,000 of bets, which sounds far worse until you price it.
Blackjack charges 0.43 percent, so those €20,000 cost €86. The game that clears the requirement fastest costs roughly five to eight times more to clear it. If a bonus is on the table, read the wagering terms before the headline figure, and treat whether to take it at all as a separate question.
What the Lobby Will Not Tell You
I went through every casino review on this site looking for a published keno pay table. Not one casino shows it in the lobby. The tile gives you a name and a picture, and the number that sets the price hides behind an info button.
So the habit worth building is simple. Open the game, open the paytable panel, and read what the top catch pays before you stake anything at all. If no panel exists, walk away, because you would be buying a price you are not allowed to see.
Try the Draw Before You Pay for It
Keno demos run the same draw as the paid game, and you can open them in the free games section without an account. The useful part is not practice, because keno gives you nothing to practice.
Mark ten numbers in a demo and count how many rounds pass before five of them land. That dry run is the game you would otherwise be paying for, and it is usually longer than people expect.
The Myths Worth Dropping
Hot and cold numbers do not exist. The draw has no memory, so a number that has been absent for forty rounds is exactly as likely as any other on the next one.
There is also no keno strategy, and it is worth saying that plainly. In blackjack your decisions move the edge. In keno the only decision that changes anything is which pay table you sit down at.
Nobody grinds the edge away by playing longer either. It is built into the payouts, so it applies to the first ticket and the thousandth in exactly the same way.
The One Honest Reason to Play It Anyway
Everything above says keno is expensive, and it is. But the house edge is not the price you pay. The price is the edge multiplied by how much money you push across the table, and keno pushes very little.
My cost per hour table works both out. A slot returning 96.05 percent at fifty cents a spin runs 600 spins an hour, so €300 crosses the table and the hour costs €11.85. Live keno runs about ten draws an hour at €2 a ticket, so €20 crosses the table and the hour costs €5.50.
Keno charges four to eight times the edge and still costs less than half as much per hour. That is the one honest thing in its favor. The game is slow, the stakes are small, and the damage per hour is lower than almost anything else in the lobby.
The warning attached to it is just as honest. The moment something speeds keno up, auto play, several tickets per draw, or a one minute round timer, that advantage is gone and the 20 to 35 percent is all that is left.
Where Keno Sits Next to Everything Else
Where to Play Keno for Real Money
Keno already carries the widest edge in this section, so a weak operator on top of it gets expensive fast. Each site below was reviewed and scored before it appeared here.
FAQ About Online Keno
What is the return on an online keno game?
There is no single figure. The draw is identical at every casino, so the pay table alone decides it. Across the published range a keno ticket gives back between 65 and 80 cents on the euro.
Why is keno more expensive than the other casino games?
Because the payouts sit well below the true odds of each catch. A four catch result that lands once in 326 tickets typically pays 80 units, not 326, and that gap is the house edge.
How do I work out the house edge of a keno game myself?
Multiply each catch probability by what that catch pays, add every result together, and subtract the total from one. The paytable panel inside the game gives you the payouts you need.
Does marking more numbers improve my chances?
No. You catch roughly a quarter of your marks whatever you pick, so more marks do not raise the return. They only lengthen the dry runs and push money toward a prize you will not hit.
Are online keno numbers genuinely random?
The draw comes from a random number generator that is tested before a game is licensed. Each round is independent, which is why no number is ever due and no pattern carries over.
Can any keno strategy beat the house edge?
No strategy exists, because you make no decisions once the ticket is marked. The only choice that changes your money is which pay table you play, and that choice happens before the draw.
Does keno count toward casino bonus wagering?
At several casinos I have reviewed it counts 100 percent, the same as slots, while table games count 10 percent or less. That makes keno the fastest and also the most expensive way to clear a bonus.
Can I play keno for free before staking real money?
Yes. Demo keno runs the same draw as the paid version and needs no account. It is the cheapest way to see how long a run of losing tickets actually gets before you pay for one.
What are the odds of catching all twenty numbers on a twenty spot ticket?
One in 3,535,316,142,212,174,320. That is the number of different ways twenty numbers can be drawn from eighty, and only one of those ways matches a full ticket.
Where do I find the pay table inside an online keno game?
Behind the info or paytable button, usually in a corner of the game screen. Open it before your first stake, because nothing in the lobby tells you what the game pays.
Who Wrote This
Keno is the game I keep coming back to when people ask me why a lobby needs a price list. Everything about the draw is public and unchangeable, and everything about the payout is private and adjustable. That combination is unusual, and it is worth understanding before you mark a ticket.
The figures on this page come from the draw itself, so you can check them with a calculator and a few minutes. The pay tables I use as examples are illustrations of the lever, not quotes from any one casino, because no casino I have reviewed publishes its own.
18+. Gambling can be addictive. Keno gives back between 65 and 80 cents on the euro over the long run, and no sequence of numbers changes that. The draw has no memory, so nothing you saw in the last round tells you anything about the next one. If gambling stops being entertainment, stop and seek help.
