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Duel Originals
48 Segments · Measured 8 August 2026

Castle Roulette The Wheel, Read Off Its Own Data

Nobody had published what this wheel is actually made of. The game reports a raw position for every spin and colours every past result by what it paid, so we lined the two up and recovered the whole layout: 48 segments, six tiers, and a price for each.

See the Layout ↓ Play Castle Roulette
48
Segments mapped
100%
Priced on every tier
30s
Between spins
Position 0, pays 48xPosition 1, pays 24xPosition 2, pays 24xPosition 3, pays 16xPosition 4, pays 16xPosition 5, pays 16xPosition 6, pays 8xPosition 7, pays 8xPosition 8, pays 8xPosition 9, pays 8xPosition 10, pays 8xPosition 11, pays 8xPosition 12, pays 4xPosition 13, pays 4xPosition 14, pays 4xPosition 15, pays 4xPosition 16, pays 4xPosition 17, pays 4xPosition 18, pays 4xPosition 19, pays 4xPosition 20, pays 4xPosition 21, pays 4xPosition 22, pays 4xPosition 23, pays 4xPosition 24, pays 2xPosition 25, pays 2xPosition 26, pays 2xPosition 27, pays 2xPosition 28, pays 2xPosition 29, pays 2xPosition 30, pays 2xPosition 31, pays 2xPosition 32, pays 2xPosition 33, pays 2xPosition 34, pays 2xPosition 35, pays 2xPosition 36, pays 2xPosition 37, pays 2xPosition 38, pays 2xPosition 39, pays 2xPosition 40, pays 2xPosition 41, pays 2xPosition 42, pays 2xPosition 43, pays 2xPosition 44, pays 2xPosition 45, pays 2xPosition 46, pays 2xPosition 47, pays 2x 48 segments 1 in 48 pays 48x
  • 48x1 seg, 1 in 48
  • 24x2 seg, 1 in 24
  • 16x3 seg, 1 in 16
  • 8x6 seg, 1 in 8
  • 4x12 seg, 1 in 4
  • 2x24 seg, 1 in 2

The wheel as the game indexes it. Position 0 is the lone 48x; the blocks widen as the multipliers fall, ending in 24 segments of 2x.

How We Got the Layout

Two Halves of the Answer, Sitting in the Same Page

Castle Roulette gives you six buttons, 2x through 48x, and a wheel on a video feed. Because the wheel is streamed video rather than something the browser draws, you cannot count its segments in the page. Both write-ups that cover the game hedge on exactly this point: the segment split is quoted from promotional material, and whether the live wheel matches it is left open.

It turns out the answer is sitting in the game itself, in two halves. The first is a numeric wheel position the game records for every finished spin. The second is the strip of past results along the top of the table, where each spin is drawn in the colour of the tier it paid, and the operator names its own tally elements count-two through count-forty_eight, which is what pins each colour to a multiplier without guesswork.

Line the position up against the colour, round by round, and the layout stops being a claim. Positions run 0 to 47, and they are grouped in six unbroken blocks rather than scattered around the rim. Across the 28 spins where we held both a position and a colour, the layout below predicted the tier 28 times out of 28.

The Duel Castle Roulette table in play, showing the Previous strip of recent results coloured by tier, the Last 100 tally reading 50 · 18 · 11 · 14 · 4 · 3, the wheel running on a CRT television in the studio, and the six bet buttons from 2x to 48x
The table as it runs. Both halves of the method are in the one frame. Along the top, the Previous diamonds colour every recent spin by the tier it paid, the green crown on the left being a 48x that has just landed, and next to them the operator's own Last 100 tally reads 50 · 18 · 11 · 14 · 4 · 3 for 2x through 48x. The wheel is the television in the middle of the studio, which is video rather than markup, and the reason the segments cannot simply be counted off the page. The fourth number is the one worth a second look: 16x came in 14 times here against the 6.25 the layout predicts, and taken across all six tiers that is the sort of spread that turns up in roughly one window in 31. Noise, in other words, and a fair picture of how far the counter wanders while the wheel underneath it stays exactly what it was. Captured 9 August 2026, with 5.3s still on the betting bar.
The Result

Every Segment and What It Is Worth

The whole wheel, by position. Each tier pays exactly the inverse of its own chance, which is why the last column reads the same all the way down.

PaysPositionsSegments ChanceAs a %Odds Fair payoutReturns
2x24–47241/250.00%1 in 22x100.0000%
4x12–23121/425.00%1 in 44x100.0000%
8x6–1161/812.50%1 in 88x100.0000%
16x3–531/166.25%1 in 1616x100.0000%
24x1–221/244.17%1 in 2424x100.0000%
48x011/482.08%1 in 4848x100.0000%
Whole wheel0–47 481100% n/an/a 100.0000%

  • The paytable is genuinely fair

    Half the wheel pays 2x, a quarter pays 4x, an eighth pays 8x, and so on down to a single segment paying 48x. Chance times payout comes to 100.0000% on all six tiers. There is no rounding fudge and no shaved multiplier anywhere on the rim.

  • Which makes it the opposite of Plinko

    We measured all 27 Plinko payout tables the same week and not one reached break-even; they keep between 0.5% and 1.1% of stake. Same casino, same Zero Edge badge, and the maths lands in a completely different place.

  • The config still leaves room for an edge

    The game ships a settings block naming a house edge floor of 0.1% and a ceiling of 5%. The segments we mapped price at zero. Both things are true at once, and the section below works through why that is not a contradiction.

Cross-Check

The Operator Publishes a Tally, So We Checked Ours Against It

Above the table the game keeps a running count of how often each tier has landed in the last 100 spins. Decoding 100 raw positions through the layout should reproduce it.

Source2x4x8x16x24x48xTotal
Our decode of 100 positions502413742100
The game's own Last 100502513642100
Difference+0-1+0+1+0+0+0

The two rows agree to within 2 across six tiers, and the residual is the one or two spins that landed between reading the history and reading the counter. Note which tier this settles: 24x sits at positions 1–2, and those never came up during the window where we could also see a colour. The counter is what confirms them, holding steady at 4 while our decode of the same window also returns 4. Of the 48 positions on the wheel, 45 showed up at least once in 100 spins.

The Interesting Part

A Fair Wheel and a House Edge Setting

Alongside the spin history the game serves its own settings block. Most of it is plumbing: which server carries the video, how long payouts are held back, the smallest tip a host will take. Two fields are not plumbing at all. One is named min_house_edge_limit and holds 0.1. The other is max_house_edge_limit and holds 5.

Read as percentages, those are returns of 99.9% at one end and 95% at the other. On $10,000 put through the wheel that is a spread from $10.00 to $500.00. The floor is the more telling number, because 99.9% is precisely the figure one of the two existing write-ups reached for when it hedged its description as a base game plus a small return layer. That hedge looks well judged: the number it guessed at is sitting in the config.

None of which makes the segments we mapped wrong. Those are the multipliers the wheel is paying, and they price at zero edge. What the config shows is that the wheel is not the only thing in play, and that the operator has given itself a band to work in rather than nailing the game to zero. Alongside the fields sit an exposure limit of 5% and a bankroll figure of 50,000,000, which is the language of risk management, not of marketing.

So the honest reading is narrower than either the promotional line or a debunking. The paytable on this wheel really is fair, unusually so for a live game show, and better value than any roulette table you will find. It is also configured with room to be up to 5% worse than that, and Duel does not publish which end of its own band any given spin sits at.

Provably Fair

The Randomness Comes From Outside the Casino

This is the part of Castle Roulette that deserves more credit than it gets, and it is not mentioned anywhere else we could find. Every spin records the round number of a drand beacon, the public randomness service run by the League of Entropy. drand publishes a fresh unpredictable value on a fixed schedule, signed by a threshold of independent operators, and no single participant can steer or withhold it. Duel is not rolling its own dice here. It is quoting a number the whole internet can look up.

Two things fall out of that, and both check out. Consecutive spins sit exactly 10 beacon rounds apart, and the quicknet chain publishes every 3 seconds, so the wheel is pinned to a 30-second heartbeat. That is the 30-second cadence we timed independently, arrived at from the other direction. Then we took 8 of the beacon rounds named in the history and pulled them from the beacon's own public API: all 8 matched the value Duel had published, byte for byte.

The commitment side holds up too. Before each spin the game shows a hash and afterwards reveals the seed behind it. Hash the revealed seed and you should get the hash you were shown, which is what proves nothing was substituted once bets were down. That reproduced on all 100 of the 100 rounds we checked, once we worked out that the hash covers the seed's raw bytes rather than the text you see.

Now the gap. Having the beacon value and the revealed seed should let you recompute the wheel position yourself, and it does not, because the function that combines them is not documented. We tried 27 standard constructions and none of them reproduced the positions. The fairness panel that might spell this out sits behind a login, so an unregistered visitor cannot inspect it at all. The result is a real but partial guarantee: you can prove the inputs were fixed in advance and that one of them came from outside the casino, and you cannot prove they produce the number the wheel showed you.

Our verification walkthrough covers the commit-and-reveal scheme as it applies across the Originals, where the algorithmic games such as Dice and Crash are considerably easier to check end to end.

Picking a Tier

All Six Cost the Same, So You Are Only Choosing Volatility

With every tier priced at 100%, no button is better value than another. What changes is how often you are paid and how hard the swings are.

TierLandsAverage wait In minutesMedian dry spell No hit in an hourSwing per $1
2x50.00%2 spins1 min1 spins0.0%1.00
4x25.00%4 spins2 min2 spins0.0%1.73
8x12.50%8 spins4 min5 spins0.0%2.65
16x6.25%16 spins8 min11 spins0.0%3.87
24x4.17%24 spins12 min16 spins0.6%4.80
48x2.08%48 spins24 min33 spins8.0%6.86

The last column is the useful one. On a fair bet paying m, the swing per dollar staked works out to the square root of m minus one, so it climbs from 1.00 on the 2x to 6.86 on the 48x. Backing the crown is 6.9 times as volatile as backing the steady tier while returning exactly the same amount over time. Spreading a stake across several tiers smooths the ride and changes nothing about the return, because every part of the spread is priced identically.

The Name

Almost Nothing About It Is Roulette

The word describes the spinning, not the maths. Set beside actual roulette the differences run all the way down.

 Castle Roulette European rouletteAmerican roulette Crazy Time
Wheel positions48, indexed 0 to 4737 pockets38 pockets54 segments
What you backOne of six multiplier tiersNumbers, colours, rangesNumbers, colours, rangesNumbers plus bonus rounds
Zero pocketNoneOneTwoNone
Best bet returns100.00% on every tier97.30%94.74%Around 96%
House edge on the layoutNone2.70%5.26%About 4%
Randomnessdrand public beaconPhysical wheelPhysical wheelStudio wheel
Can you check a roundCommitment yes, position noNoNoNo

Roulette keeps its edge with pockets that pay less than their odds deserve: a single number on a European wheel lands once in 37 and pays 35 to 1, and the American wheel adds a second zero to widen the gap. This wheel has no equivalent. There is no zero segment, and each tier pays its exact inverse. If you arrive expecting roulette you will find the bet types missing; if you arrive expecting a game show money wheel you will find one priced far better than the genre norm.

Tempo

Thirteen Seconds to Decide, Then It Is Gone

The clock is the thing most likely to cost you here, given the paytable will not. A spin lands every 30 seconds and the window to place a bet is 13.6 seconds of that, under half the round. That is 120 decisions an hour if you play every one, on a game where no decision improves your return.

  • • 30s per spin, holding steady across every round we timed
  • • 13.6s to bet, roughly 45% of the round
  • • Payouts held back 4s by a configured delay
  • • 2,880 spins a day, with the counter past 850,520
The Duel Originals rail, where Castle Roulette sits alongside Plinko, Crash, Dice and Limbo
Castle Roulette FAQ

Questions About the Wheel

No, and the name is the most misleading thing about it. There are no numbered pockets, no zero, no red and black, and none of the inside or outside bets that roulette maths is built on. What spins is a wheel of 48 segments carrying six multipliers, and you back a multiplier rather than a number. The right comparison is a game-show money wheel such as Crazy Time, not a roulette table.
The layout does, exactly. The wheel has 48 positions split into blocks of 24, 12, 6, 3, 2, 1 segments, and each tier pays precisely the inverse of its own chance: 24 of 48 segments pay 2x, 1 pays 48x, and so on down the line. Multiply chance by payout on any tier and you get 100.0000% of stake back. That is a genuinely edge-free paytable, which is not what we found when we measured Plinko.
From the game's own configuration rather than the paytable. The metadata the site serves to every visitor carries a block called castle_roulette_config, and inside it are two fields: min_house_edge_limit set to 0.1 and max_house_edge_limit set to 5. Read as percentages those are returns of 99.9% down to 95%. The segments we measured price at zero edge, but the game is configured with room for an edge between 0.1% and 5%.
The game reports a raw wheel position for every completed round, and separately the page draws each past result in the colour of the tier it paid. Line the two up and the layout falls out. Positions run 0 to 47 in six unbroken blocks, and across the 28 rounds where we had both a position and a colour the layout predicted the tier 28 times out of 28. Decoding all 100 positions in the history then reproduced the tally the game prints itself to within 2 across six tiers.
From drand, the public randomness beacon run by the League of Entropy, on its quicknet chain. Each round names the beacon round it used, and consecutive spins sit exactly 10 beacon rounds apart. At 3 seconds a beacon round that is 30 seconds, which is the spin cadence we timed. We pulled 8 of those rounds straight from the beacon's public API and all 8 matched what Duel published, byte for byte.
Partly, and the gap matters. The commitment side checks out: the game publishes a hashed server seed before the spin and the plaintext after, and hashing the revealed seed reproduced the published hash on all 100 rounds we tested. The beacon value checks out too. What is missing is the function that combines them into a wheel position. It is not documented, and 27 standard constructions all failed to reproduce the positions. So you can prove nothing was swapped after you bet, but you cannot recompute where the wheel stopped.
None of them, on expected return. Every tier gives back the same 100.00% of stake, so the choice changes only how violently your balance moves. On a fair bet paying m, the swing per dollar staked is the square root of m minus one. That puts 2x at 1.00 and 48x at 6.86, so the crown tier is 6.9 times as volatile as the steady one for identical value.
One spin in 48 on average, which at 30 seconds a spin is about 24 minutes. Averages hide the shape though. Half of all dry spells run longer than 33 spins, and there is a 8% chance of sitting through a full hour, 120 spins, without seeing it land once.
A spin every 30 seconds, without variation across everything we timed. The betting window is 13.6 seconds of that, about 45% of the round, and payouts are held back 4 seconds by a delay the config sets explicitly. That works out at 120 spins an hour and 2,880 a day.
The wheel you watch is a video stream, not something your browser draws, so the presentation and the result reach you down separate paths. The result is settled by the beacon and the seed; the stream shows you a host and a wheel agreeing with it. Duel runs the feed over Red5 Cloud WHEP with a Dolby fallback, and the metadata names the host on shift, which was APsmalls while we were measuring.
No. Spins are settled by a beacon round that did not exist when the previous spin closed, so nothing carries over. The strip is worth reading for a different reason: it is the operator publishing its own outcome tally, which is what let us check our decode of the wheel against it. Useful as an audit trail, useless as a signal.
No, because the in-house Originals are left out of the rakeback schedule. Slots earn 50% of the edge back and live blackjack 60%, and the Originals are excluded on the grounds that they already return everything. On this wheel that reasoning holds up better than it does on Plinko, where the measured tables keep between 0.5% and 1.1% of stake.
A Fair Wheel Is Still a Wheel
Every tier is priced the same, so pick the one whose swings you can sit through rather than the one with the biggest number on it.
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18+ · Gamble responsibly · Wheel measured at duel.com/castle-roulette on 8 August 2026 · Affiliate link disclosed

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