Keno in One Paragraph
Keno is a lottery-style game where players choose numbers (called "spots") from a field of 1–80, then wait for the house to randomly draw 20 numbers. You win based on how many of your chosen numbers match the drawn numbers — the more matches, the higher your payout. The paytable, which is set by the casino or lottery, determines exactly how much each match count pays.
Step-by-Step: How a Keno Game Works
Get a Keno Ticket
At a lottery retailer, ask for a keno playslip. At a casino, find the keno lounge or video keno machine. Online, navigate to the keno game. Each ticket represents one game.
Choose Your Numbers
Mark between 1 and 10 numbers (some games allow up to 12 or 20) from the field of 1–80. These are your "spots." You can choose any numbers — birthdays, patterns, quick picks (random), or anything else.
Decide Your Spot Count
The number of spots you pick determines your paytable. A 6-spot game has different payouts than an 8-spot game. Most players decide their spot count first, then pick their numbers accordingly.
Place Your Bet
Most games offer $1, $2, $5, or $10 per game. Your payout is a multiple of your bet — so a $2 bet on a paytable that pays "$5 for 3 matches" pays you $10. Higher bets = proportionally higher payouts.
The Draw Happens
20 numbers are drawn at random from the pool of 1–80. This is done by a certified RNG (random number generator) in electronic games, or by a ball blower machine in traditional casino keno lounges. Each draw is completely independent.
Your Matches Are Counted
The system (or you) compares your spots to the 20 drawn numbers. Each number that appears on both your ticket and the draw is a "catch" or "hit." The total number of catches determines your prize tier.
Collect Your Payout
At a lottery retailer, you present your winning ticket to collect. At a casino or on a machine, winnings are credited automatically. Online, winnings go to your account balance. If you didn't win, you buy a new ticket for the next draw.
Draw Mechanics: How the 20 Numbers Are Selected
The draw is the heart of keno — and understanding it helps demystify the game. In any legitimate keno game, the 20 drawn numbers are selected from 80 without replacement. That means the same number can't appear twice in one draw.
Modern electronic keno uses a certified random number generator (RNG). These are audited by independent testing labs (like GLI or BMM) to verify true randomness. The RNG selects 20 unique numbers from 1–80 in milliseconds.
Traditional casino keno lounges use a physical ball blower — a transparent cage filled with 80 numbered ping-pong-style balls, pushed around by air. A runner draws balls one at a time until 20 are selected. This is the same basic technology as bingo and many lottery draws.
The Keno Draw Board — Visual Example
Here's what a completed keno draw looks like. The gold numbers are the 20 drawn by the house. The blue numbers are a sample player's 6 picks. Where they overlap is a catch.
Sample draw: Player picked 6 spots (blue), house drew 20 numbers (gold). Bright-bordered cells are catches.
The Four Formats of Keno
Keno is played in several distinct formats. The core mechanics are the same, but speed, setting, and paytables differ significantly.
1. Lottery Keno
Run by state lottery commissions. Examples include Massachusetts Keno To Go, Ohio KENO!, and Michigan Club Keno. These games draw every 4–5 minutes, 7 days a week. You buy tickets at licensed retailers (gas stations, convenience stores, bars). The paytable is fixed by the state — you can't shop around for better odds at the same lottery.
Key traits: Fixed draws on a schedule, official state lottery, ticket-based, retailers pay out winnings under a certain threshold.
2. Casino Keno Lounges
Traditional casino keno is played in a dedicated lounge area, often with comfortable seating, cocktail service, and a large display board showing the current draw. Draws happen every 10–20 minutes. You fill out paper tickets and give them to a keno runner or writer before the next draw. The relaxed pace is part of the appeal — it's social gambling at its most low-key.
Key traits: Slower pace, social atmosphere, paper tickets, cocktail service common, paytables vary by casino.
3. Video Keno
Electronic machines that look and feel like slot machines. You pick your spots on a touchscreen, press a button, and the draw happens in seconds. Video keno is much faster than any other format — you can play dozens of games per hour. Paytables are programmed into the machine and can vary from machine to machine, even in the same casino.
Key traits: Very fast (seconds per game), solo play, touchscreen, paytables vary by machine, feel similar to slots.
4. Online Keno
Played through licensed online casino platforms. The draw uses a certified RNG, results appear instantly, and many variations of the core game exist — multi-race keno (bet on multiple upcoming draws at once), power keno (jackpot multiplier for last ball drawn), and others. Available 24/7 from any device.
Key traits: Instant draws, many game variants, play from home, RNG certified, 24/7 availability.
| Format | Draw Speed | Setting | Paytable | Best For |
|---|---|---|---|---|
| Lottery Keno | Every 4–5 min | Lottery retailers | Fixed by state | Casual, everyday play |
| Casino Lounge | Every 10–20 min | Casino lounge | Varies by casino | Social, relaxed play |
| Video Keno | Seconds | Casino floor | Varies by machine | Fast-paced solo play |
| Online Keno | Instant | Home / mobile | Varies by platform | Convenience, variety |
Lottery Keno vs. Video Keno: Key Differences
These two formats are the most commonly compared, and there are some meaningful differences beyond just speed:
- House edge: Video keno machines can have higher house edges (sometimes 20–35%) than lottery keno (typically 25–28%), though this varies widely. Always check the specific paytable.
- Bet sizes: Lottery keno usually has fixed bet amounts ($1, $2, $5). Video keno machines often allow penny bets up to several dollars per credit, with variable credit counts.
- Pace: Video keno at 1 game per 5 seconds means you can burn through a bankroll 50x faster than lottery keno at 1 game per 4 minutes.
- Social element: Lottery keno at a bar or restaurant can be a group activity. Video keno is typically solo.
Try Our Odds Calculator
Now that you understand how keno works, use our calculator to see the exact probability of any outcome for any spot count.
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