Demo 0
Free-play · European single zero

RoulettePad

A single-zero wheel under the midnight lights

Place your bets
Pick a chip, tap the table, then spin.
Total bet0
Tap to add a chip · right-click or long-press to removeDemo chips · local only

How it works

A European wheel with 37 pockets: 1 to 36 and a single green zero. Place chips anywhere on the table, spin, and every bet that covers the winning number pays at the odds below. Bets stay on the table so you can spin again, change them, or clear them.

i.

Try the demo with 1,000 local chips, or sign in with your wallet (a text signature, never a transaction) to keep your chips.

ii.

Choose a chip value and tap the felt: on a number, on a line between numbers (split), at a crossing (corner), or on the outside boxes.

iii.

Spin. The server draws the pocket from your provably fair seeds, and you can re-check every spin in the verifier below.

Bets and payouts

BetWhere to place itCoversPaysWin chanceRTP

A winning bet returns its stake plus the payout (a 10-chip straight up that hits returns 360). Zero loses every outside bet; there is no "la partage" rule. Total stake per spin must fit the table limits; up to 80 separate bets per spin.

Fairness mapping and RTP

  1. Each spin uses one nonce of your seed pair. The first float is read from HMAC_SHA256(serverSeed, clientSeed:nonce), 4 bytes at a time: b0/2^8 + b1/2^16 + b2/2^24 + b3/2^32.
  2. The winning number is floor(float × 37), a number from 0 to 36. Every number has exactly the same chance, 1 in 37.
  3. Each bet covering that number returns amount × 36 / (numbers covered). The server checks every bet against the list of legal bets before the spin, and the same code runs in the verifier on this page.

Wheel order (clockwise from zero). The wheel animation lands the ball in the drawn number; the animation itself never decides anything.

97.297%RTP of every bet on the table, exact (36/37)
2.703%house edge, the single zero (1/37)
1 in 37chance of any single number

Every bet pays 36 ÷ (numbers covered) for each chip, so every bet type and every mix of bets has the same exact RTP. Holder win bonuses (+2/+5/+10% of profit) come on top for holders.

Holder perks

Sign in with your wallet to keep chips, claim daily chips and appear on the leaderboard. Holding the project's coin unlocks bigger daily chips, a small bonus on wins and the holders' table.

Daily chips reset at 00:00 UTC. Claiming on consecutive days adds a streak bonus (+10% per day, up to +50%). The holder tier is read from your wallet's token balance on Solana at sign-in and every 10 minutes. Perks are bonus play only: chips have no cash value.

Provably fair

Every result is decided on the server from seeds you can check. Before you play you see the SHA-256 hash of the server seed. Each play uses HMAC-SHA256(serverSeed, clientSeed:nonce), and the game's mapping below turns those bytes into the result. When you rotate, the old server seed is revealed, so you can re-run every past result yourself.

Your seeds

Sign in to get your own seed pair. Demo plays use a local seed in your browser.

Verify a result

Paste a revealed server seed, the client seed and the nonce. The result is recomputed in your browser.

Leaderboard

Net chips won from play (payouts minus stakes; holder bonus not counted, so every tier competes equally) by signed-in wallets. Real recorded plays only. Demo chips never count. The week runs Monday to Sunday, UTC.

#WalletTierNet chipsPlaysWagered

Responsible play

  • There is nothing to buy here, and nothing you win here can be cashed out.
  • Take breaks. Results are random, and the house edge stated on this page applies to every play.
  • If gambling ever stops being fun for you or someone you know, free confidential help is available, for example from BeGambleAware.org (UK) or 1-800-GAMBLER (US).