Mega Sena: What It Is, How It Works, and Why Brazil Goes Crazy for Its Lottery
If you've ever heard of Mega Sena and weren't quite sure what it was, you're in the right place.
If you've ever heard of Mega Sena and weren't quite sure what it was, you're in the right place. And if you've never come across it before, get ready — by the time you finish reading this, you might just want to try your luck at Brazil's biggest lottery.
What Is Mega Sena?
Mega Sena is Brazil's official national lottery, managed since 1996 by Caixa Econômica Federal, the country's largest public bank. It is, by a wide margin, the lottery that distributes the biggest prizes in Brazil and one of the most popular in all of Latin America.
Three draws a week — on Tuesdays, Thursdays, and Saturdays — millions of players, and jackpots that can reach astronomical figures. That, in a nutshell, is Mega Sena.
How It Works
The mechanics are straightforward: players choose between 6 and 20 numbers from a range of 1 to 60. In each draw, 6 numbers are randomly selected. The more you match, the bigger the prize.
There are three prize tiers:
| Tier | Matches | Prize |
|---|---|---|
| Sena | 6 numbers | Main jackpot |
| Quina | 5 numbers | Mid-tier prize |
| Quadra | 4 numbers | Lower prize |
If nobody matches all 6 numbers, the jackpot rolls over to the next draw. And so it goes, week after week, until someone takes it all. That rollover mechanic is exactly why Mega Sena can generate jackpots worth tens — and sometimes hundreds — of millions of euros.
The minimum entry is 6 numbers. The more numbers you add to your ticket, the more combinations you play and the better your chances — though the cost of the entry also goes up. For those who don't want to spend too much individually, group play is by far the most popular option.
The Odds
With a minimum entry of 6 numbers, the probability of hitting the Sena jackpot is 1 in 50,063,860. It's the Caixa lottery with the lowest odds of winning the top prize on a minimum entry — which explains both the frequent rollovers and the extraordinary jackpot values it produces.
For context: the odds are similar to those of Euromillions or Powerball. Tough, yes. But not impossible, as the thousands of winners since 1996 can confirm.
The Mega da Virada: The New Year's Eve Draw That Stops Brazil
Once a year, on December 31st, Brazil holds the Mega da Virada — literally, the New Year's Turn draw. And this draw has one very special feature: the jackpot doesn't roll over. Whatever happens, the prize is paid out that day.
Throughout the year, 10% of the revenue from every regular Mega Sena draw is set aside for this moment. The result is a prize that regularly exceeds hundreds of millions of Brazilian reals. In the 2025 edition, the jackpot reached the historic mark of approximately R$1 billion — split between four winning tickets. Previous editions had prizes of R$635 million in 2024 and R$588 million in 2023.
On December 31st, Brazil stops. Families gathered around the TV, office syndicates, friends who get together to watch the live draw on YouTube... The Mega da Virada is to Brazil what El Gordo is to Spain: a collective end-of-year ritual.
Why Brazil Goes Crazy for Mega Sena
Brazil has a very special relationship with Mega Sena that goes far beyond simply trying to win money. It's part of the culture.
Bolões — groups of friends, coworkers, or neighbours who pool their money to buy more entries — are a deeply rooted tradition. When the jackpot starts rolling over, office syndicates organise themselves. Whole workplaces grind to a halt when the prize gets big, because everyone's mind is on the numbers.
The draws are broadcast live on YouTube and television. News presenters interrupt programming to announce the results. The official Caixa app has millions of downloads. And there are families who have been playing the same numbers for decades, passing the habit from generation to generation.
It's a lottery that, over 30 years of history, has created thousands of millionaires and been part of countless life stories across Brazil.
How to Play Mega Sena From Outside Brazil on Lottofy
The good news is that you don't need to live in Brazil to take part. On Lottofy you can play Mega Sena online from anywhere, with the same odds as any player in São Paulo or Rio de Janeiro.
You have three options:
- Single entry: pick your numbers and enter the next draw.
- Mega Sena Pool: play with a shared group of entries and split prizes with other participants.
- Mega Sena Syndicate: 280 entries played as a group — the most complete way to have presence in every draw.
And if you activate automatic renewal, your entry goes into every draw on its own without you having to remember a thing. Three times a week, Tuesday, Thursday, and Saturday.
The current Mega Sena jackpot on Lottofy is always visible on the platform, updated in real time. There's a draw this week. Are you in?