A high-speed simulator that buys Japanese lottery tickets one by one until you hit the jackpot.
Prize Breakdown
How to Use the Japanese Lotto Simulator
- Automatic Start: The simulation begins automatically as soon as the page opens.
- Stop & Start: Use the “STOP” button to pause and “START” to resume your purchase streak.
- Reset: To start over from zero, click “NEW GAME” or simply refresh the page.
About the Summer Jumbo Lotto
Simulation
Everyone buys a lottery ticket with the hope of “This time, it’s me!” But in reality, the odds are incredibly slim.
By using this simulator, you can experience firsthand just how difficult it is to hit the jackpot.
Of course, it all comes down to luck—give it a try and see how your luck holds up!
Simulation Rules
This simulator is based on the 2024 Summer Jumbo Lottery in Japan.
- Individual Purchases: Tickets are bought one by one (random selection).
- Total Pool: 240 million tickets (24 units).
- No Repeats: Once a ticket is drawn, it is removed from the pool.
Prizes and Winning Probabilities
Based on the 2024 Summer Jumbo official data (10 million tickets per unit).
| Prize | Amount | Winners (Total) | Odds |
| 1st Prize | ¥500,000,000 | 24 | 0.00001% |
| Adjacent to 1st | ¥100,000,000 | 48 | 0.00002% |
| Wrong Group | ¥100,000 | 2,376 | 0.00099% |
| 2nd Prize | ¥1,000,000 | 2,400 | 0.001% |
| 3rd Prize | ¥10,000 | 24,000 | 0.01% |
| 4th Prize | ¥3,000 | 2,400,000 | 1% |
| 5th Prize | ¥300 | 24,000,000 | 10% |
Calculations are based on the official winning probabilities from the Japan Lottery Association.
Reality Check: What else has a 0.00001% chance?
Winning the 1st prize (0.00001%) feels like a tiny number, but how rare is it really? Here are some other events with similar odds:
- Getting hit by a giant meteorite: 0.0000143%
- Struck by lightning (fatal): 0.0000077%
- Shark attack: 0.000027%
- Being in a plane crash: 0.0000091%
- Giving birth to triplets: 0.0000125%
Basically, these are things most people will never experience in their entire lives!
The Payout Rate (Return to Player)
The payout rate for the Japanese lottery is approximately 45%.
The remaining 55% is used by the government for public works, social welfare, and administrative costs.
FAQ: Japanese Lotto Simulator
What is the Japanese Lotto Simulator?
It is a virtual tool that simulates buying lottery tickets to see the results. You can experience how the system works and see the true odds without spending any real money.
What can I do with this tool?
- Virtually purchase massive amounts of tickets instantly.
- Check winning results in real-time.
- Analyze long-term profit/loss and return rates.
- See the statistical reality of winning the jackpot.
Is there a fee to use it?
No. All calculators and simulators on this site are 100% free to use.
Why I Created This Simulator
As the creator, I’ve always bought 10 tickets every time a “Jumbo Loto” comes out, thinking, “Maybe this is my turn!”
However, my result is always the same: the 5th prize (¥300).
After spending about ¥20,000 with zero luck, I started wondering, “Does anyone actually win this?” That curiosity led me to develop this simulator.
When I ran the code, I was shocked at how rarely the big prizes appeared.
I believe the value of this tool is in facing the brutal reality of the numbers. While I have terrible luck, my brother once bought a few tickets and won ¥10,000, proving that it’s not impossible to walk away with a profit. It really is all about luck!
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