How Keno Works: A Complete Beginner's Guide
Keno is one of the world's oldest and most popular lottery-style games. Played in dozens of countries across Europe, Asia, Oceania and the Americas, it offers a simple premise: pick numbers, watch a draw, and win prizes based on how many of your selections match. This guide explains exactly how Keno works, from the basic mechanics to the mathematical principles behind the odds.
What Is Keno?
Keno is a number-drawing game operated by official lotteries and licensed gaming organizations. The player selects a set of numbers (called "spots" or "picks") from a defined pool — typically 1 to 70 or 1 to 80. The operator then draws a fixed quantity of numbers at random (usually 20). Prizes are awarded based on how many of the player's chosen numbers match the drawn numbers.
Unlike traditional lotteries that draw once or twice a week, Keno games often run multiple draws per day — some as frequently as every 3–5 minutes. This high frequency makes Keno one of the most accessible lottery formats available.
The Basic Rules of Keno
While specific rules vary by country and operator, the fundamental structure of Keno is consistent worldwide:
| Step | What Happens |
|---|---|
| 1 | Choose how many numbers (spots) you want to play — usually between 1 and 10, sometimes up to 20 |
| 2 | Select your numbers from the available pool (e.g., 1–80) |
| 3 | Choose your stake amount (bet size) |
| 4 | The operator draws 20 numbers at random from the pool |
| 5 | Your prize is determined by how many of your picks match the drawn numbers |
Number Pools: 70 vs 80
The most common Keno formats use either a 70-number or 80-number pool. This difference significantly affects the odds:
80-Number Pool (1–80)
Used by: Poland (Multi Multi), Australia, New Zealand, Canada, most US states, China, Brazil
With 80 numbers and 20 drawn, each number has a 25% chance of being selected in any given draw.
70-Number Pool (1–70)
Used by: Germany (KENO), France (Keno FDJ), Czech Republic, Denmark, Norway, Finland, Belgium
With 70 numbers and 20 drawn, each number has a ~28.6% chance — slightly better odds per number.
A smaller pool means better odds for the player. For example, matching 5 out of 5 in a 70/20 game has odds of approximately 1 in 781, compared to 1 in 1,551 in an 80/20 game. You can verify this using our Odds Calculator.
How Keno Draws Work
Modern Keno draws use certified Random Number Generators (RNGs) or physical ball-drawing machines, depending on the operator. The process is regulated and audited to ensure fairness:
- RNG-based draws — Most frequent Keno games (every 3–5 minutes) use certified computer algorithms. These are tested by independent auditors to verify randomness.
- Ball-machine draws — Some operators (like Germany's DLTB) use physical ball machines for their main draws, similar to traditional lotteries.
- Live-streamed draws — Many operators broadcast draws in real-time via their websites or dedicated TV channels for transparency.
Understanding Keno Odds
Keno odds are calculated using the hypergeometric distribution — a mathematical formula that computes the probability of drawing a specific number of matching items from a finite population without replacement.
The key factors that determine your odds are:
- Pool size (N) — How many numbers are in the total pool (e.g., 70 or 80)
- Numbers drawn (D) — How many numbers the operator draws (usually 20)
- Your picks (s) — How many numbers you select (your "spots")
Example Odds — 80/20 Game, 5 Spots
| Matches | Probability | Odds |
|---|---|---|
| 0 of 5 | 22.72% | 1 in 4.4 |
| 1 of 5 | 40.57% | 1 in 2.5 |
| 2 of 5 | 27.05% | 1 in 3.7 |
| 3 of 5 | 8.39% | 1 in 11.9 |
| 4 of 5 | 1.21% | 1 in 82.7 |
| 5 of 5 | 0.065% | 1 in 1,551 |
As you can see, matching all 5 numbers occurs approximately once every 1,551 draws. The most common outcome is matching exactly 1 number (about 41% of the time). Use our Odds Calculator to check exact probabilities for any game and spot selection.
How Prizes Work
Keno prizes are determined by three factors:
- Number of spots picked — More spots = higher potential prizes but lower odds
- Number of matches — More matches = bigger prize
- Stake amount — Prizes are typically multiplied by your bet size
Each operator publishes a pay table showing exact prizes for each combination of spots and matches. Some games also offer prizes for matching zero numbers when playing higher spot counts (e.g., picking 10 and matching 0 sometimes pays a small prize).
Keno Variations Around the World
While the core mechanics remain the same, Keno games vary significantly across countries:
| Feature | Variations |
|---|---|
| Pool size | 70 (Europe) or 80 (most others) |
| Max picks | 8 (some), 10 (standard), 15 or 20 (some games) |
| Draw frequency | Every 3 min (Greece KINO) to once daily (Germany KENO) |
| Bonus features | Multipliers, bonus balls, heads/tails side bets |
| Top prizes | €100,000 (France) to €1,000,000+ (Germany) |
Browse our full directory to compare Keno games from over 20 countries, or explore by country to see what's available in your region.
Common Keno Terms
| Term | Definition |
|---|---|
| Spot | A number you select; "5-spot" means you picked 5 numbers |
| Catch | A match between your number and a drawn number |
| Pool | The total range of numbers available (e.g., 1–80) |
| Quick Pick | Randomly generated numbers chosen by the system |
| Multi-draw | Playing the same numbers across multiple consecutive draws |
| Multiplier | Optional feature that multiplies prizes (e.g., 2x, 5x, 10x) |
| House edge | The mathematical advantage the operator has (typically 25–40% in Keno) |
Is Keno a Good Bet?
Keno typically has a house edge of 25–40%, which is higher than most casino games but comparable to other lottery products. The appeal of Keno lies in its simplicity, frequent draws, and the ability to control your risk level by choosing how many spots to play.
It's important to understand that Keno is a game of pure chance. No strategy, system, or number selection method can change the mathematical odds. Each draw is completely independent of all previous draws. "Hot" and "cold" numbers are statistical observations of the past, not predictors of the future.
If you choose to play Keno, set a budget you can afford to lose and treat it as entertainment. For more information, visit our Responsible Play page.