The real trick to roulette is to get lucky, then quit while you're ahead. Every spin has a 1 in 37 (for European) or 1 in 38 (for American) chance of landing in a given pocket.

What are the best roulette strategies?

D'Alembert system. For first timers. Learn more.
Paroli system. For first timers. Paroli system.
Martingale system. For high rollers. Learn more.
Labouchere system. For high rollers. Learn more.
Andrucci system. For risk-takers. Learn more.
Fibonacci system. For risk-takers. Learn more.