Here’s an example of the Martingale Betting System in action, the video demonstrates how simple Martingale is to use, and some of the pitfalls involved in using this system.
The example used was online using the ‘free game’ play at DublinBet, the beauty of this casino is that you play actual live games direct from the casino in Fitzwilliam Street, Dublin. Therefore there are no numerical biases based on the random number generator in the computer software is.
The free game is ideal for testing betting systems and strategies before you use them for real. Don’t try to play online roulette using any betting system on a computer generated game, always use a real online casino like Dublinbet (there are some others I think) to be ensure the game is fair.