The 666 system is an aggressive online roulette betting strategy but fairly low risk. It is similar to the cover-the-field system where you bet on as many numbers as you can. By betting on so many numbers at once, the theory goes, the chances of making a small profit is greater.

What is the most successful roulette strategy? While there is no strategy that can guarantee a profit in the long run when playing roulette, the Martingale betting system is often regarded as the most successful strategy. It is easy to use and can provide good returns.

Although roulette is a game of chance, you can win big money by playing high-risk, single number bets which pay out better than group or combination bets. Single pockets pay out 35:1 for example, so you can get a decent prize if your single number comes up as the winner.