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Roulette Strategy Simulator by Roulette77

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How to Use the Roulette System Simulator

This tool is designed to test different roulette strategies and betting patterns. The simulator uses a Random Number Generator (RNG) to reproduce roulette outcomes and show how your selected strategy affects your bankroll over a long session. To run a test, follow a few simple steps.

  1. Place your bets on the betting grid. Use chips ranging from 0.1 to 500 units and place them on the bets required by your strategy. The total value of all selected bets is automatically displayed in the Total Bet field.
  2. Choose the number of spins. In the Number of Spins field, set the length of the simulation. You can test a strategy over 10 to 1,000 spins.
  3. Set your starting balance. In the Starting Balance field, enter an initial bankroll between 100 and 100,000 units. The simulator will use this amount as the starting point for the calculation.
  4. Choose the bet progression. The Additional Settings section includes three modes:
    • Default. The bet amount remains the same after every round. The simulator uses the same stake throughout the entire test.
    • Double After Loss. After a loss, the bet is doubled. After a win, it returns to the original amount. For example, if you bet 1 unit on black and lose, the next bet will automatically increase to 2 units. After a win, it returns to 1 unit.
    • Double After Win. This mode works in the opposite way: the bet doubles after a win and returns to the original amount after a loss.
  5. Edit your bets if needed. The UNDO button cancels your last action. To remove all bets from the table, use CLEAR.
  6. Start the simulation. Once all parameters are set, click Start. The tool will automatically run the selected number of rounds according to your strategy.
  7. Review the results. For each round, the RNG randomly determines the winning number. The system then calculates the result of the bet and updates the balance. The results are displayed in a table with the following data:
    • Round — the sequential number of the round.
    • Number — the winning number generated by the RNG.
    • Status — the result of the round: win or loss.
    • Bet — the total amount wagered in the current round.
    • Payout — the amount won or lost based on the round result.
    • Balance — the bankroll after the round is completed.

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Author and update
Article author: Andrew Shepard
Last update: 14.09.2026
Andrew Shepard Head of product

Andrew Shepard is a roulette expert with over 10 years of experience in international gambling markets. At Roulette77.com, he specialises in strategy testing, game mechanics, and developing roulette simulators.