How Keno Works: Spots, Odds and Payouts in Asia's Keno Games

How a keno draw works: 20 numbers from 80

Every keno draw starts with the same basic mechanic: a machine selects 20 numbers from a pool numbered 01 to 80. Those 20 numbers are the winning numbers for that draw. You win a prize by matching however many of your chosen numbers appear among them³.

The draw itself is quick. Vietlott publishes the drawing rules for Keno as a formal document, and each draw is conducted under supervision⁴. You do not need to watch the draw live. Your ticket is already registered in the system, and the result is what matters.

What makes keno different from a traditional lottery is the frequency. A standard lottery might draw once or twice a week. Keno draws every 8 minutes, all day, every day². That speed changes how you play. You are not waiting days for a result. You buy a ticket, the draw happens within minutes, and you know almost immediately whether you won.

The 20-from-80 format is the core of Vietlott Keno. Other keno games in Asia and elsewhere use different pools. In Canada, for example, DAILY KENO draws 20 numbers from 1 to 70⁵. The principle is the same: a fixed set of numbers is drawn, and you match your picks against them.

Choosing spots: from 1 to 10 numbers per entry

When you fill out a Vietlott Keno slip, you choose how many spots you want to play. The range is from spot 1 to spot 10¹. Each spot count has its own prize table, and the odds shift depending on how many numbers you pick.

Here is how the spot system works in practice:

• Spot 1: You pick one number. If it comes up among the 20 drawn, you win a small prize.
• Spot 2 to Spot 9: You pick that many numbers. The more you pick, the harder it is to match all of them, but the prize for a full match grows.
• Spot 10: You pick 10 numbers. Matching all 10 wins the top prize of VND 2 billion³.

You mark your numbers on boards A and B on the play slip. Each board corresponds to one printed set of numbers. If you do not want to pick manually, you can mark MAY TU CHON (auto pick) and the machine will choose for you². The maximum is 10 numbers per entry².

The trade-off is straightforward. Picking fewer spots gives you better odds of matching something, but the prizes are smaller. Picking more spots gives you a shot at the big prize, but the odds of matching all of them are longer. There is no single best approach. It depends on whether you want frequent small wins or a chance at the top tier.

For comparison, DAILY KENO in Canada lets you choose as few as two numbers (2 PICK) or as many as 10 (10 PICK)⁵. Vietlott Keno goes one step further by allowing a single-spot entry.

What a ticket costs and how to buy one

A Vietlott Keno ticket costs VND 10,000 per entry. That is the value of one participation for each way you play⁶. If you do not mark a betting value on your slip, the default is VND 10,000¹. There is no limit on how much you can wager in total³.

To buy a ticket at a retail point:

1. Pick up a play slip and a pencil at the counter. These are available at Vietlott points of sale².
2. Mark your numbers on boards A and B, or mark MAY TU CHON for auto pick².
3. Choose your spot count, from 1 to 10¹.
4. Hand the slip to the salesperson.
5. Take your printed ticket and pay the entry value shown on it².

You can also buy through the Vietlott SMS app on your mobile phone. For Bingo18, the app confirms bets by SMS from the number 9969⁷. The same channel handles Keno purchases.

If you want to play multiple draws, you can select up to 30 consecutive draws in advance¹. That means you can buy once and have your numbers entered into the next 30 draws without returning to the counter. The total value of your entries must be a multiple of VND 10,000⁶.

Vietlott has published guidance on how to buy tickets safely and through official channels⁸. Stick to official points of sale or the official app.

Draw schedule: every 8 minutes, all week

Vietlott Keno runs from 06:00 to at least 21:55 every day, Monday to Sunday, with a draw frequency of 8 minutes per draw¹. Other official documentation lists the schedule as 06:04 to 21:54 daily with a 5-minute frequency⁴. The exact interval can vary, but the key point is that draws run continuously throughout the day, seven days a week.

Tickets are sold continuously throughout each draw period¹. You do not need to buy in advance for a specific draw. You can walk up, buy a ticket, and be in the next draw within minutes.

This is what people mean by "speed keno." The draws come fast. With a draw every 8 minutes, you can play about seven draws in an hour if you want to. The pace is closer to a casino game than a weekly lottery.

For context, DAILY KENO in Canada runs two draws per day, a 2 p.m. MIDDAY draw and a 10:30 p.m. EVENING draw⁵. Vietlott Keno is a different animal entirely. It is built for rapid play.

Bingo18, Vietlott's three-number side game, runs even faster. It is issued from 06:00 and ends at the latest 21:53 daily, Monday to Sunday, with draws every 6 minutes and continuous ticket sales⁹. That is a draw roughly every six minutes, from early morning to nearly 10pm.

Prizes and payout caps: VND 2 billion top prize

The headline prize in Vietlott Keno is VND 2 billion for matching 10 of 10 numbers³. That is the top of the table. Below it, each spot count has its own prize tiers.

Some key figures from the prize structure:

• Spot 10, match 10: VND 2 billion³
• Spot 8, match 8: VND 200 million per winning entry if fewer than 50 such entries in a draw³
• Spot 9, match 9: VND 800 million per winning entry if fewer than 12 such entries in a draw³

There are caps on how much Vietlott pays out in a single draw. The total payout for tiers 8, 9 and 10 combined is capped at VND 10 billion per draw³. If there are five or fewer prizes in a draw, each winner receives VND 2 billion⁶. If there are more winners than the cap allows, the payout is divided among them.

The side games have their own prize tables. In the Big/Small side game, you can win VND 26,000 for picking Big (13 or more numbers from 41 to 80) on a VND 10,000 entry⁴. In the Odd/Even side game, you can win VND 200,000 for 15 or more even numbers³.

Vietlott will announce any change to the number, structure or value of prizes in advance⁶. If the prize table changes, you will know before you play.

Who is allowed to play in Vietnam

Vietlott Keno is open to three groups: Vietnamese citizens, Vietnamese who reside abroad, and foreigners legally admitted to Vietnam¹. You must be at least 18 years old². You must also have full civil capacity under Vietnamese law, meaning you are not restricted in your capacity for civil acts or have lost it¹.

For visitors and expats, the key phrase is "legally admitted to Vietnam." If you entered the country legally, you meet that part of the requirement². You do not need to be a resident or a citizen. A tourist visa or business visa entry is enough.

If you do not meet the eligibility rules, Vietlott has the right to refuse payment of prizes when you win². That is the practical risk. You can buy a ticket, your numbers can come up, and you can still lose the prize if you were not eligible to play. Check that you qualify before you buy.

For foreigners and overseas Vietnamese with foreign passports, winnings can be received and transferred or carried abroad in foreign currency under Vietnamese foreign exchange rules¹⁰. That means you are not stuck with a large VND prize you cannot move. You can convert and take it out, subject to the normal foreign exchange rules.

Checking results and claiming prizes

The simplest way to check your Vietlott Keno ticket is to scan it at a checkwin machine at any point of sale¹. These machines are placed at Vietlott retail points. You do not need to wait for a draw to be published online. The machine reads your ticket and tells you if it has won.

You can also check results on the Vietlott SMS app. For LOTTO 5/35, Vietlott tells players they can scan the ticket at checkwin machines or check on the Vietlott SMS app¹¹. The same app handles Keno and Bingo18 results.

If you bought your ticket through the app, your purchase history shows your entries and results. For Bingo18, players betting by mobile phone must have a betting account and a prize-receiving account⁷. Prizes are credited to that account.

Keep your ticket safe until you have confirmed the result and claimed any prize. Vietlott Keno players must be 18 years old or above, and you can select a maximum of 30 draws in advance⁷. If you have a question about a draw or a prize, take it to the point of sale that issued your ticket, since that is where Vietlott handles ticket matters.

Bingo18: Vietlott's three-number side game

Bingo18 is a different game from Keno, but it runs on the same fast-draw principle. Each draw result consists of three numbers, drawn three times, with each number from 1 to 6⁹. The three numbers can repeat⁸.

The draw schedule is even faster than Keno. Bingo18 is issued from 06:00 and ends at the latest 21:53 daily, Monday to Sunday, with a draw every 6 minutes and continuous ticket sales⁹. It runs on the phone channel only⁸.

Bingo18 offers 38 ways to play with varied prize values⁷. The basic bet types include the options below.

A winner receives only one prize tier per bet type⁹. The payout is the number of entries at VND 10,000 each multiplied by the prize value for one entry⁹. The minimum age is 18⁷. The eligibility rules mirror Keno: you must be a Vietnamese citizen in the country, a Vietnamese citizen residing abroad who legally entered Vietnam, or a foreigner legally entering Vietnam, with full civil capacity⁷.

Bingo18 uses Vietnamese dong for both betting and prize payment⁷. There is a trial play app at the bottom of the page, but it is for experience only and has no real prize value⁷.