Roulette Guide: Rules, Odds & House Edge for Crypto Players
European roulette: 37 pockets, 2.7% house edge, and outside bets at 1:1. Full odds table, variant comparison, betting systems explained, and a free demo path.
Virtual chips · European 37-pocket wheel · No signup
How do you play roulette — and can you beat it long term?
European roulette has 37 pockets and a 2.7% house edge — no betting system changes that math, but outside bets are the easiest way to learn the rhythm before trying demo play.
Oliver Bennett · 12 min · 更新 May 2026
I run the games desk at game.xyes.com — testing live and RNG table games against published RTP and house-edge math. This guide reflects standard European roulette rules used at major crypto casinos.
Roulette in 30 seconds
Roulette is not about gut feel — the dealer (or simulator) spins the wheel, the ball lands on a number, and payouts follow the odds table.
Before the spin, pick a betting area: Red/Black, Odd/Even, High/Low (outside bets at 1:1), Dozen/Column (2:1), or straight up on a single number (35:1). Win and you are paid per the table; lose and the stake goes to the house.
Most live and RNG roulette at crypto casinos uses the European 37-pocket layout (0–36). Check the table before you play — an extra 00 on American wheels nearly doubles the long-term loss rate.
Beginners should start with outside bets to learn the pace. Straight-up bets offer 35:1 payouts but only hit 2.7% of spins. The full comparison table is below.
Place your first bet: 5-step flow
Walk through once with virtual chips in the free simulator — zero risk while you learn pick → spin → payout before playing live.
- 01
Pick a chip
Select a chip value such as $10 at the bottom of the simulator (practice mode uses virtual chips — no real money).
- 02
Tap a betting area
For your first spin, tap Red or Black on the outside layout (1:1). You will see the chip stack on that section.
- 03
Confirm your stake
The sidebar shows total bet for the round. Clear and rebet, or use ½ / 2× to adjust chip size.
- 04
Spin the wheel
Press Spin — the wheel turns for about three seconds, then the ball settles in a pocket.
- 05
Check the payout
Red or Black wins pay 1:1. If zero hits, most outside bets lose. Your balance updates — spin again to practice.
European vs American vs French: which is better for players?
Always prefer European (or French La Partage). The American 00 raises house edge from 2.7% to 5.26%.
| Feature | European roulette | American roulette | French roulette |
|---|---|---|---|
| Pocket count | 37 (0–36) | 38 (0–36 + 00) | 37 (0–36) |
| Zero pocket(s) | Single 0 | 0 + 00 | Single 0 |
| House edge | 2.70% | 5.26% | 1.35%* |
| Special rules | None | None | La Partage / En Prison |
| Typical availability | Live + RNG default | Some US-style tables | Rare but best odds |
| Feature | European roulette | American roulette | French roulette |
|---|---|---|---|
| Pocket count | 37 (0–36) | 38 (0–36 + 00) | 37 (0–36) |
| Zero pocket(s) | Single 0 | 0 + 00 | Single 0 |
| House edge | 2.70% | 5.26% | 1.35%* |
| Special rules | None | None | La Partage / En Prison |
| Typical availability | Live + RNG default | Some US-style tables | Rare but best odds |
*French La Partage returns half your even-money stake when zero hits; En Prison leaves the bet for the next spin under the same rule — either can cut effective edge to about 1.35%. Most crypto casinos offer Evolution European tables.
Full odds table (European)
European roulette payouts at a glance
European wheel · 37 pockets · single zero · ~2.7% house edge long-term
Labels match the simulator layout; FAQ may say low/high for the 1–18 / 19–36 zones
4-bet preview — even-money outside
1–18 and 19–36 are also 1:1 — tap below to see all.
Outside bets hit often at 1:1; straight pays 35:1 but rarely — same house edge, different variance.
Try in simulator →European wheel · 37 pockets · single zero · ~2.7% house edge long-term
Labels match the simulator layout; FAQ may say low/high for the 1–18 / 19–36 zones
Outside bets hit often at 1:1; straight pays 35:1 but rarely — same house edge, different variance.
Table grouped by outside, dozens/column, inside combos, and French bundles. House edge is 2.7% on every standard bet. French bundles pay per sub-bet.
| Bet type | Payout | Win probability | House edge |
|---|---|---|---|
Outside 1:1 | |||
1–18 | 1:1 | 48.65% | 2.7% |
EVEN | 1:1 | 48.65% | 2.7% |
RED | 1:1 | 48.65% | 2.7% |
BLACK | 1:1 | 48.65% | 2.7% |
ODD | 1:1 | 48.65% | 2.7% |
19–36 | 1:1 | 48.65% | 2.7% |
Dozens / column 2:1 | |||
1ST 12 1–12 | 2:1 | 32.43% | 2.7% |
2ND 12 13–24 | 2:1 | 32.43% | 2.7% |
3RD 12 25–36 | 2:1 | 32.43% | 2.7% |
COL 1 1st vertical column · 12 numbers | 2:1 | 32.43% | 2.7% |
COL 2 2nd vertical column · 12 numbers | 2:1 | 32.43% | 2.7% |
COL 3 3rd vertical column · 12 numbers | 2:1 | 32.43% | 2.7% |
Straight & combos | |||
Straight Single number 0–36 | 35:1 | 2.70% | 2.7% |
Split Two adjacent numbers | 17:1 | 5.41% | 2.7% |
Street One row of three | 11:1 | 8.11% | 2.7% |
Corner Four numbers at a corner | 8:1 | 10.81% | 2.7% |
French call bets (advanced) Multi-bet bundles — learn rules first Payout is calculated per sub-bet, not one flat odds line | |||
Jeu Zéro (4 bets) Zero plus 3 adjacent splits Mixed bundle · paid per sub-bet | Mixed bundle | Per sub-bet | 2.7% |
Voisins (9 bets) Numbers around zero · 9 bets Mixed bundle · paid per sub-bet | Mixed bundle | Per sub-bet | 2.7% |
Tiers (6 bets) Six numbers on the wheel arc Mixed bundle · paid per sub-bet | Mixed bundle | Per sub-bet | 2.7% |
Orphelins (5 bets) Orphans on either side of zero Mixed bundle · paid per sub-bet | Mixed bundle | Per sub-bet | 2.7% |
Want to verify payouts bet by bet? Jump to the demo section and cross-check the sidebar odds table. For the math behind the edge, see our house edge guide.
Outside bets vs straight up: same edge, different variance
Every standard bet on a European wheel carries a 2.7% house edge long term — the difference is variance, not which bet “must win.”
Outside bets (even money) — 1:1
Red/Black, Odd/Even, High (19–36)/Low (1–18). Wins pay even money, but zero makes all of these lose. Effective win rate is about 48.65% — ideal for learning the rhythm.
Dozen and column — 2:1
First dozen (1–12), second (13–24), third (25–36), or any of the three columns. Wins pay 2:1. Hit rate is about 32.4%, still affected by zero.
Straight up — 35:1
One number (0–36). Wins pay 35:1 but hit only 2.7% of spins. Higher payout does not mean better long-term odds — house edge remains 2.7%.
In other words, Red/Black and straight up lose at the same long-term rate — outside bets mean smaller stakes over many spins; straight up means bigger swings on fewer hits. For how the edge is calculated, see our house edge guide; for RTP and expected value, see the RTP explainer.
Advanced bets: call bets and French combinations
Zero, Voisins du Zéro, Tiers du Cylindre, and Orphelins — preset call-bet bundles that still carry a 2.7% house edge long term.
Zero (4 chips): covers 0 and three adjacent numbers. Voisins du Zéro (9 chips): numbers around zero. Tiers du Cylindre (6 chips): a third of the wheel. Orphelins (5 chips): splits on numbers not in the other call zones.
These are call bets — on live tables you announce them; simulators often expose the same presets so you can preview coverage before playing for real.
Advanced bets do not lower house edge — they only speed up placement. Treat any “guaranteed combo” marketing as promotion, not math.
Common betting systems: variance only, not edge
Every standard European bet keeps a 2.7% house edge — the methods below only change your bankroll curve and swing size, not expected value.
You will see “Martingale always wins” or “James Bond never loses” online — those claims ignore zero, table limits, and long-term math. Below we break down each system with dollar examples so you see why you are choosing variance, not an edge-beating method.
The rational approach: flat betting to control budget; if you want to test a rhythm, run 20–50 demo spins with virtual chips and watch how your balance moves before playing live.
| System | Progression rule | Variance | Bust risk | Changes EV? |
|---|---|---|---|---|
| Flat betting | Same stake every spin | Low | Low | ❌ |
| Martingale | Double after a loss | High | Very high | ❌ |
| Grand Martingale | Double plus one unit after loss | Very high | Higher | ❌ |
| Paroli (reverse Martingale) | Increase after a win | Medium | Medium | ❌ |
| D'Alembert | Loss +1 unit, win −1 unit | Low–medium | Medium | ❌ |
| Fibonacci | Follow sequence on loss/win | Medium | Medium | ❌ |
| James Bond | Fixed split layout | Medium | Low (per spin) | ❌ |
| System | Progression rule | Variance | Bust risk | Changes EV? |
|---|---|---|---|---|
| Flat betting | Same stake every spin | Low | Low | ❌ |
| Martingale | Double after a loss | High | Very high | ❌ |
| Grand Martingale | Double plus one unit after loss | Very high | Higher | ❌ |
| Paroli (reverse Martingale) | Increase after a win | Medium | Medium | ❌ |
| D'Alembert | Loss +1 unit, win −1 unit | Low–medium | Medium | ❌ |
| Fibonacci | Follow sequence on loss/win | Medium | Medium | ❌ |
| James Bond | Fixed split layout | Medium | Low (per spin) | ❌ |
Flat betting — the rational baseline
Recommended
Flat betting — the rational baseline
RecommendedBet the same amount each spin — for example $10 on Red every time. Over 100 spins that is $1,000 total exposure; long-term expected loss is about $27 (2.7%).
Lowest variance, no chasing losses — best for entertainment, learning payouts, and keeping sessions predictable. If you want the slowest bleed rate, flat betting is the only system that never amplifies risk through progression.
Example (Red/Black flat $10)
- Spins 1–10: $10 each — win +$10, lose −$10
- After 100 spins, expected total loss ≈ $27; actual results fluctuate around that
Martingale — double after a loss
High risk
Martingale — double after a loss
High riskThe most famous progressive system: bet an even-money outside bet, double after each loss, reset to base stake after a win. It looks like “recovering” losses, but zero, losing streaks, table limits, and bankroll caps break it.
Example (base $10 on Red, five losses in a row)
- Spin 1 −$10 → spin 2 bet $20 −$20 → spin 3 $40 −$40 → spin 4 $80 −$80 → spin 5 $160 −$160
- Five losses total −$310; next bet would need $320 to “recover everything in one hit”
- Five consecutive losses betting on Red (Black or zero) ≈ (19/37)⁵ ≈ 3.4% — rare in one session, inevitable over many
- At a $500 table limit, the sixth double may be impossible; zero wipes outside bets anyway
Grand Martingale — double plus one unit
Extreme risk
Grand Martingale — double plus one unit
Extreme riskLike Martingale, but after each loss you double and add the base unit. Base $10: after a loss the next bet is 10×2+10 = $30, then $70, then $150… bankroll burns faster than standard Martingale.
Deep pockets and high limits do not fix the math — long-term EV is still negative; wins just look bigger while busts arrive sooner.
Example (base $10)
- Four consecutive losses: $10 + $30 + $70 + $150 = $260 total risk
- Standard Martingale four losses = $150 — grand Martingale is materially worse
Paroli — increase after a win
Medium variance
Paroli — increase after a win
Medium varianceOpposite of Martingale: double after wins, reset to base after a loss. Example: $10 → win → $20 → win → $40, one loss back to $10.
Three wins in a row nets +$70 ($10+$20+$40 profit); the fourth loss costs only $10. Losing streaks stay small unlike Martingale.
Downside: without a long win streak there is no big payoff; house edge remains 2.7%.
Example (base $10 on Red)
- Win → win → win → lose: +$10, +$20, +$40, −$10 → net +$60
- Lose four in a row: −$10 each → net −$40 (stake always $10)
D'Alembert — step ±1 unit
Conservative
D'Alembert — step ±1 unit
ConservativeAdd one unit after a loss, subtract one after a win (with a floor at the starting stake). Gentler than Martingale — slower busts, but zero and losing runs still cost money.
Example ($10 unit on Red)
- $10 lose → $20 lose → $30 win → $20 win → $10
- Four spins net: −$10−$20+$30+$20 = +$20 (lucky run; long-term still negative EV)
Fibonacci — sequence progression
Conservative
Fibonacci — sequence progression
ConservativeUse the Fibonacci sequence 1, 1, 2, 3, 5, 8, 13… as unit multipliers (usually on outside bets). Move forward one step on a loss, back two on a win.
Slower than Martingale, but later sequence steps still get large — test on demo only; set stop-loss on live tables.
Example ($10 unit, sequence 1-1-2-3-5)
- Five losing steps: $10 + $10 + $20 + $30 + $50 = $120 cumulative risk
- One win steps back two positions in the sequence
James Bond — fixed split layout
Layout demo
James Bond — fixed split layout
Layout demoNot progressive — each spin uses a fixed split across High (19–36), a six-line on 13–18, and a small straight up on 0. Below is a $200-per-spin example.
Covers 25/37 numbers; the remaining 1–12 (12 pockets) wipes the full $200 in one hit. Good for a short session to learn combo payouts — not a long-term profit system.
$200 per spin allocation
- High (19–36) $140 — 18 numbers, 1:1
- Six line (13–18) $50 — 6 numbers, 5:1
- Straight up 0 $10 — 1 number, 35:1
- Result 1–12: lose all −$200 (probability 12/37 ≈ 32.4%)
- Result 19–36: net about +$80; 13–18 or 0 pay differently — verify on the simulator
Betting every number or chasing hot/cold streaks are not separate “systems” — one is max variance on a single spin, the other misreads independent events. Whatever rhythm you use, stop when you hit your loss limit.
Want to test a system? Jump to the demo section and run 20 spins with virtual chips. 文末試玩區 →
Common myths: streaks and sold systems
If a system truly beat the house, why would anyone sell it to you?
Hot and cold colors
Each spin is independent — five Reds in a row does not make Black “due.” Past results do not compensate for the next outcome; the casino profits from that illusion.
Sold “winning systems”
Roulette software, tipster groups, and AI prediction claims cannot change 2.7% math. Systems only pick variance (steady vs volatile), not expected value.
Martingale and other progressions? See the dollar breakdowns in Betting systems — they are not edge-beating methods.
5-point player checklist
Prefer European tables
Confirm 37 pockets with a single zero before you bet. If you see 00, switch tables or platforms.
Set a loss limit
Roulette is entertainment, not investing — stop when you hit your budget, never chase losses.
Test withdrawal first
On a new site, run a small crypto withdrawal before sizing up — confirm payouts work.
Understand zero
Zero makes most outside bets lose — read the odds table so you know where the 2.7% edge comes from.
Get help if needed
Gambling can be addictive. If you need support, contact GamCare (gamcare.org.uk) or your local responsible-gambling helpline.
Practice the rules: free European roulette simulator
Once you know the odds, open the simulator with virtual chips — Red/Black, straight up, and call bets use the same European math as live tables.
Open free simulator →No signup · European 37-pocket wheel · Virtual chips
FAQ
Q1What are the odds and win rates for Red/Black, Odd/Even, and High/Low?
- ✔Even-money outside bets pay 1:1
- ✔18 winning pockets vs 18 losing, but zero drops effective win rate to 48.65%
- ✔Long term the casino keeps 2.7% — that is math, not rigging
Q2Why do I still lose long term on 35:1 straight-up bets?
- ✔Hit rate is 1/37 (2.7%), payout is 35:1
- ✔Casino retains 1/37 ≈ 2.7%
- ✔One big win feels great, but expected value stays negative over many spins
Q3What happens when zero hits?
- ✔Zero is green — not Red/Black, Odd/Even, or High/Low
- ✔Most outside and dozen/column bets lose
- ✔Only a straight-up bet on 0 pays 35:1
Q4Martingale, “sure wins,” and best bet type?
- ✔Every standard European bet has 2.7% edge — there is no “best” bet for profit
- ✔Martingale cannot guarantee wins: zero, limits, and bankroll caps break progression
- ✔Systems change variance only, not long-term negative expected value
Q5Which betting system suits beginners?
- ✔Flat betting has the lowest variance and no loss-chasing
- ✔James Bond teaches combo layout but 1–12 wipes the stack ~32.4% per spin
- ✔Martingale and grand Martingale bust risk is extreme — demo only
Q6What are call bets?
- ✔Preset combinations of 4–9 standard splits in one action
- ✔Voisins du Zéro covers numbers around zero; Tiers and Orphelins cover other wheel thirds
- ✔Long-term house edge is still 2.7%
Q7What should crypto players watch for?
- ✔Use licensed platforms with clear terms
- ✔Prefer European wheels, set a budget, do not chase
- ✔Understand crypto deposit and withdrawal rails before you size up
Responsible gambling
Roulette is entertainment
97.3% RTP means a 2.7% long-term loss. Do not expect betting systems to generate income — only wager what you can afford to lose.
Reject sold “sure systems”
Prediction software, tipster groups, and AI pick services are marketing — they cannot change house edge.
Need support
Gambling can be addictive. GamCare (gamcare.org.uk) and the National Council on Problem Gambling (ncpgambling.org) offer confidential help.
Further reading: want the math behind the edge?
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