List of the most used stretegy to win at Roulette
Martingala
It's the most simple method that can be done at Online Casino. It's used only on the simple bets like B/R, Pair/Odd, 1-18/19/36. For example we taking the B/R. Theoretically one same color can not came always.
In fact if we spin roulette a lot of time we see a sequence like this: BRRBRBBBRRRRBRBBBBRRRBRBBBBBBRR and so on. If I bet 1$ on the Black and come Red than I bet again on the Black doubling the previuos bet. So $2 on the Black. It'is came Red again? Then I double again the previuos bet on the Black... If came Black I win 8$ and I regain all the previous lost with 1$ more than when we started to bet! If came 0 we count this like a negative series and we continue to bet the double ! In maths term : if I lost cause it's come a negative serie (es: 1+2+4+8=15) if now I bet 16$ I can win $36. So I lost 31=15+16 with a earn of 1$ . Every time we win we restarted to bet 1$.
Precaution:Behind this simple method there's the risk to lose a lot of money. Casiṇ Online have a "betlimit". So if the limit is 50$ and I start to bet 1$ I can lose something like 1+2+4+8+16+32=$63 . Use this method with attention!!! We would wait that one colour ( Pair/Odd or 1-18 19-36) appear a lot of time such 4 times and than start to bet... Try Now at CasinoLasvegas 
The Dozen
Like the "double bet" method but with the difference that we bet on the dozens (1-12,13-24,25-36) and the win will be 1*3. So it's not necessary to double. We wait that one dozen of the three doesn't appear for five times or more . Then we bet on the dozen that is not appear! For example: I bet 1$ on the Dozen(-1st 12-). If I lose I bet 1$ again. If I lose again I bet 2$ . And so on 4,6,9... until the ball caught on that sector.
When you arrive at the fourth bet you must change the sequence. The sequence to follow is this : 1,2,3,4,6,9,13,20,30,45,67 . Try Now at 50StarCasino
5 Fiches
The method consist to cover major part of the table with only 5 pieces. Three pieces will go on the 1-18 square and the other 2 pieces on the 25-36 leaving uncover 7 number on the French Roulette (0,19,20,21,22,23,24) and 8 number on the American Roulette because the double 0 (00). With this method we can gain always 1 piece more for every round.
If we lose we can try to recover the loss tripling,and not doubling , the previuos bet! In this case 3 pieces and 2 pieces will become 9 and 6, 27and 18 and so on... We can vary this metodh with one more profitable but more expensive too method. It's necessary 5 pieces of $5 value and 4 pieces of $1 value. The fiches will be set so: 3 pieces of $5 on the 1-18 square and 2 pieces on the 24-36 dozen. The other 4 pieces we will bet on the uncover number wherever we want (0,00,19,21,22,23,24,25). We will gain 1 pieces if come a number cover by the $5 pieces and 6 pieces if come a number cover by the $1 pieces. Only 4,5 number will be uncover (5 on the American Roulette and 4 on the French Roulette) and we can lose 29$!!!
So it's more convenient to play this method on the France Roulette. Try Now
Desert Dollar
Biloxi
It's necessary 16 pieces for gain 2 pieces every round! 6 pieces must be placed on the first column and 6 pieces on the third column. The other pieces that remain will be placed like horses between 0 and 2, 8 and 11, 17 and 20, 26 and 29. On the European Roulette will be uncover only 5 numbers. We lose only if come this number: 5,14,23,32,35. On the American Roulette we do a horses between 0 and 00 leaving uncover the number 2.
You can add an other horses but you can gain only one pieces... This method doesn't use the doubling bet so you can lose all the bet!!! Try Now at Bet365
