Real physics. Real wheel.

A real European wheel and a ball that follows real physics: every bounce, every rattle, every drop into a pocket.

The wheel

A European wheel built in 3D at real size, 820 mm across: 37 pockets, the frets between them, the diamonds on the bowl and the turning rotor.

The ball

Its motion is real physics: gravity, friction and spin. It runs around the bowl, hits the diamonds, rattles over the frets and settles into a pocket. A spin lasts 15 to 26 seconds, 10 to 15 laps, like at a real casino.

The sound

Every click and rattle is made from the ball’s own collisions and speed: you hear what you see.

The dealer

A voice announces the end of betting, the winning number and the wins.

The table

3D casino chips: tap a spot or drag a chip onto the felt, and change is made for you. Seven seats — tap a free one to sit there — and when they are all taken, more players play standing behind them. Everyone’s chips appear as they are placed.

AI autoplay

Autoplay is played by an AI. Pick Quiet or Aggressive, your stake and when to stop, and an AI player picks every round’s bets like a person at the table: it watches the others’ bets, keeps favourite numbers, puts its chips down one by one and tells you why. Your limits stay yours: it never bets more than you chose.

Everywhere

It runs in the browser on phones and computers with nothing to install, and you can add it to your home screen like an app.

Whenever money is on the table, the winning number is drawn on Solana, by a program anyone can check, and the ball lands in that pocket. See how it works

Real sizes, 1:1

Every size at the table comes from real casino equipment, taken from the makers’ own spec sheets. For those who like to check:

	Roulana	At a real casino
The wheel	820 mm across, 37 pockets	800–830 mm: the standard 32-inch European wheel
The ball	21 mm, 8.7 g	21 mm is the standard ball for this wheel; a 21 mm ivorine ball weighs 8.7 g
A spin	15 to 26 s, 10 to 15 laps	like spins timed at real casinos
The chips	39 × 3.3 mm, stacks of 20	39 mm roulette chips, 3.3 mm thick, stacks of 20
A number box	84 × 106 mm	84 × 106 mm
The whole layout	1,193 × 508 mm	1,168–1,219 × 508–533 mm (46–48 × 20–21 inches)
Seats	7	7 or 8

The physics uses these same sizes and weights: the 8.7 g ball meets the diamonds, frets and pockets where they really are, so it bounces the way a real one does.

Pictures

The roulette wheel close up, the ball high on the track — The ball racing around the bowl.

The ball resting in a pocket of the wheel — Into the pocket.

The betting layout with chips on several numbers — The table on a computer.

The game on a phone held upright — The same table on a phone.

The winning number shown on the table with the win message — A win.

For the technically curious

Babylon.js (WebGL) draws the table in your browser, with physically based materials and shadows.
The ball’s motion comes from MuJoCo, a physics engine used in robotics research: its contacts with the diamonds, the frets and the pockets, its rolling and its spin.
A Bun and TypeScript server runs the table over WebSockets, with a shared clock, so every screen shows the same spin at the same moment.
The rules and the money live in a Solana program written in Rust with Anchor.
Autoplay’s bets are picked by DeepSeek V4.1 Flash through OpenRouter; code checks every bet and keeps every limit.