Even if there isn't a betting limit, and if you have an infinite credit limit, it still doesn't really work, it just doesn't really fail either. If the martingale strategy is continued indefinitely and without regard to betting limits, your bankroll will hit arbitrarily high positive and negative values. The expected value is still negative, but the variation is so high that it your bankroll won't stay either negative or positive.

Place your bets. The first six bets are placed on the pockets numbered 0 to 36 on the game table. If you want to bet on column, place your bets on the empty pocket under the three columns. For the dozen, choose the pocket P12 for the first 12 numbers, M 12 for the 12 middle numbers and D 12 for the last 12 numbers. Finally, when you want to bet on the outside bets, use the red, black, even, odd, high or low pockets.

As you’ve seen, the rules of Roulette are really quite simple. Now that you’re caught up with the history and basics of the game, let’s go over betting! Real Money Roulette tables have their own chips, and players are designated different colored chips so the croupier will know who to pay and who to take. Each table also will have a minimum bet posted.

The contribution of roulette towards this is very important. At one extreme you’ll find casinos which exclude roulette games entirely. Others weight the contribution to the play-through at a flat rate, for example, 10%. An alternative approach is to exclude bets which cover a certain amount of the wheel (for example 60% or more) and weight the mid-risk / low-risk bets.
Practice playing at a free table before placing actual bets. See if the casino has a free table, purchase one to play at home, or play on one online just to get a feel for the game. This will introduce you to the various bets involved in roulette. You can make several types of wagers on a roulette table, which is basically a 3-column chart that lists the 36 numbers on the wheel. The types of wagers are grouped into 2 categories:[1]
Yes! You can definitely find place online to play for high stakes. The important thing is to find a site that you feel very confident in that you can trust them with your money. With all of the shady practices that have been reported out there and because we feel that safety is so important, we wrote a page specifically about high stakes roulette and where to play at. 

Janae Johnson is a staff writer who loves old movies, meeting new people, exploring the great outdoors, and learning with her hands. After graduating from the College of William and Mary, she applied her degree in English to an ever-expanding industry. She has spent years searching for thrills and fulfillment in her work, until she finally found her home at Planet 7.
My goal with this roulette strategy is to keep you away from the devastating loss that the Martingale ultimately entails. Plenty of times on the two spins that you sit out there will be a winning spin – had you bet it. More times there won’t. Remember the casino has that edge on all of those even-money wagers. That fact should always be front and center in your mind. Never think you are playing an even game even on bets called “even-money” bets.  
On an American wheel, there are 38 spots: numbers 1-36, plus 0 and 00.  Your odds of winning a one-number bet are 37 to 1 (37 ways to lose, 1 way to win).  But if you win, the casino doesn't pay you 37 to 1, they pay you less: 35 to 1.  The difference between the true odds and what they actually pay you is 2/38, or 5.26%.  You can do this same calculation for the other bets, and it comes out the same.