This table spins a European or American wheel with play money, so you can try bets and betting systems without risking anything.
Pick one and it bets for you. You spin.
Choose a European or American wheel, place chips on the layout, and spin. Your balance is play money, so a losing session costs nothing.
You can also let a strategy bet for you. Pick one that another player published in the Marketplace, and the Strategy Copilot places its bets while you spin.
The European wheel has 37 pockets and a single zero, which gives a house edge of 2.70%. The American wheel has 38 pockets with a zero and a double zero, and its house edge is 5.26%. No betting system changes either number.
A seeded pseudo-random generator called Mulberry32 picks every result. The same seed always produces the same spins, so you can reproduce any run from its seed. Run enough spins and you can see the edge in your results instead of taking it on faith.
The Strategy Builder lets you write your own betting rules and run them over many spins. A free run goes up to 100,000 spins, and a Premium Deep Run goes up to 100 million. Each run reports the bust rate, the distribution of outcomes, and the worst-case tails.
The strategy simulators run Martingale, Fibonacci, D'Alembert, and other systems through the same engine, with their seeds stated. The strategy guides and the bet reference pages use it too, and the bet pages give computed odds for both wheels. Ranked play deals and resolves each spin on the server, so the site can verify leaderboard scores. You get 150 ranked spins a day.