Demo game · play money · 2.70% house edge

European Table

A single-zero wheel with 37 pockets and the standard payouts: 35 to 1 on a number, even money on red, black, odd, even, low and high, 2 to 1 on dozens and columns. Every bet carries the same 2.70% house edge.

bankroll: $1,000
net: +$0
spins: 0
wagered: $0
expected loss so far: −$0
max drawdown: −$0

Bankroll0 spins · start $1,000

Chip$click adds · right-click removes

staked $0

Place chips on the layout, then spin

Chip $10 · Single zero; standard payouts.

Strategy

Let a system place the bets

Pick a template, edit the JavaScript, then run it one spin at a time or for hundreds of spins instantly. Templates are starting points for your own rules.

// Same bet every spin.
return [{ on: 'red', amount: chip }];

API available inside your code

bankroll current balance · chip selected chip · spin spin number

lastNet result of the previous spin (+/−, 0 on first)

history array of { number, color, net, bets, bankroll }

memory object that survives between spins (store your progression here)

return an array like

[{ on: 'red', amount: 10 }, { on: 17, amount: 5 }]

on: 0–36 · 'red' 'black' 'odd' 'even' 'low' 'high' · 'd1' 'd2' 'd3' · 'c1' 'c2' 'c3'

Bets above the bankroll or the $1,000 table limit are capped. Return [] to sit out a spin.

spinresultcolorbetsnetbankroll

Play money only. Results come from the browser’s random number generator; no outcome is stored or transmitted. Whatever the strategy, the expected loss is the house edge times the total you wager: 2.70% on this wheel.