What’s up, Otaku Bettors!
The 31 Betting System is a betting system where you just need to win twice in a row within 9 spins to come out ahead.
Even if you lose every single round in a 9-spin set, the maximum loss is capped at 31 units — so you always know your worst-case.
So today I’m going to break down everything about the 31 Betting System — how it works, the pros, the cons — in a way that even Smooth Brain Gamblers can follow!
How the 31 Betting System Works
Using the 31 Betting System in roulette is super easy!
The 31 Betting System is a roulette strategy that guarantees a profit if you win twice in a row within 9 spins, and even if you fail, the maximum loss is only 31 units.
The bet amount for each spin is determined by the outcome — you just follow the structure.
First, the maximum 9 spins are divided into 4 stages — Stage A through Stage D.
I’ll use $1 per unit as the example here.
| Stage A | Stage B | Stage C | Stage D | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Round 1 | Round 2 | Round 3 | Round 4 | Round 5 | Round 6 | Round 7 | Round 8 | Round 9 | |
| Bet (Units) | 1 | 1 | 1 | 2 | 2 | 4 | 4 | 8 | 8 |
Win Once — Move Up One Stage
If you win once during Stage A, move up one stage and continue betting from there.
| Stage A | Stage B | Stage C | Stage D | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Round 1 | Round 2 | Round 3 | Round 4 | Round 5 | Round 6 | Round 7 | Round 8 | Round 9 | |
| Bet Amount | $1 | $1 | $1 | $2 | $2 | $4 | $4 | $8 | $8 |
| Win/Loss | Loss | Win | – | Loss | Win | Win | |||
| Balance | $30 | $31 | – | $29 | $31 | $35 | |||
↑ Win once during Stage A, and the next spin starts from Stage B.
Win Twice in a Row — Stop and Reset
Since 2 consecutive wins within 9 spins will always produce a profit, reset the moment you hit that 2-win streak.
| Stage A | Stage B | Stage C | Stage D | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Round 1 | Round 2 | Round 3 | Round 4 | Round 5 | Round 6 | Round 7 | Round 8 | Round 9 | |
| Bet Amount | $1 | $1 | $1 | $2 | $2 | $4 | $4 | $8 | $8 |
| Win/Loss | Loss | Loss | Loss | Loss | Loss | Loss | Win | Win | |
| Balance | $30 | $29 | $28 | $26 | $24 | $20 | $24 | $32 | |
↑ Rounds 7 and 8 hit 2 consecutive wins for +$1 profit, so there’s no need to bet in Round 9 — if you want to keep going, start the whole sequence over from the beginning.
Where to Use the 31 Betting System
The 31 Betting System works on even-money (2x payout) areas.
That means Red/Black, Even/Odd, or 1-18/19-36.
Pros
The advantages of using the 31 Betting System in roulette are that 2 consecutive wins within 9 spins is all it takes to profit, and your maximum loss is fixed.
Just 2 Consecutive Wins Within 9 Spins to Profit
Roulette outside bets tend to run in streaks, so hitting 2 wins in a row within 9 spins is pretty doable.
Your Maximum Loss Is Fixed
At $1 per unit, the maximum loss is $31.
Even if you lose every round in a set, you’ll never lose more than $31 — that’s a comforting ceiling to have!
| Stage A | Stage B | Stage C | Stage D | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Round 1 | Round 2 | Round 3 | Round 4 | Round 5 | Round 6 | Round 7 | Round 8 | Round 9 | |
| Bet Amount | $1 | $1 | $1 | $2 | $2 | $4 | $4 | $8 | $8 |
| Win/Loss | Loss | Loss | Loss | Loss | Loss | Loss | Loss | Loss | Loss |
| Balance | $30 | $29 | $28 | $26 | $24 | $20 | $16 | $8 | 0 |
Cons
The main downside of using the 31 Betting System in roulette is that if you can’t hit a 2-win streak, there’s no way to recover the loss.
No 2-Win Streak Means No Recovery
Simply put — if you don’t hit 2 wins in a row within 9 spins, that set is over.
All you have is a clear stop-loss figure — there’s no way to recover those 31 units…
Auto-Calculator
I built a calculator that automatically works out your next bet amount
— just enter your loss tolerance (stop-loss limit) and unit size, then hit start!
31 System Edge
— 31 Betting System Auto-Calculator
All you do is tap win or loss!
The tool handles everything else — seriously effortless.
FAQ
- Is the 31 Betting System really that simple?
- Yes. It’s literally just win twice in a row within 9 spins. The bet amounts are fixed, so if you follow the table, there’s nothing to figure out.
- Where should I bet?
- In roulette, it only works on even-money areas — Red/Black, Even/Odd, 1-18/19-36.
- What’s the worst I can lose?
- At $1 per unit, the maximum loss is $31. No more than that.
- What if I can’t get 2 consecutive wins within 9 spins?
- That set ends. There’s no way to recover the 31-unit loss, so move on to the next set.
- Who is this suited for?
- It’s a good fit for players who like to build profit steadily, or for anyone who feels more comfortable knowing exactly where their stop-loss is.
Quick Recap
Got the hang of the 31 Betting System?
Let me run through the key points one more time.
The 31 Betting System is a simple betting method where 2 consecutive wins within 9 spins will always produce a profit.
With the maximum loss fixed at 31 units, it’s also easy to manage your bankroll.
Key Takeaways
- Follow the fixed bet amounts for up to 9 spins — stop the moment you win twice in a row.
- Even-money areas only — Red/Black, Even/Odd, 1-18/19-36.
- Maximum loss is 31 units — never more.
- Win twice in a row within 9 spins and you’re always in profit.
- Well-suited for players who want to secure profit in a short, structured run.
Because the 31 Betting System has clearly defined bet amounts and a fixed stop-loss, it’s also a great option for players who struggle to keep their emotions in check!
Want to Level Up? Check These Out!
- Half-Stop Betting Rule
- A money management system that locks in half your profit as you play!
- Labouchere Betting System
- Clear all the numbers in the sequence and you walk away with your target profit!
- Vegas Progression Betting System
- Press your bet on a winning streak! Win just 2 in a row and even a mid-run loss won’t cost you anything!