Yes, you can win money playing online roulette. This is how it's done:
You must guess the outcome of where the ball will land on the roulette wheel.
This is obviously a lot easier said than done.
The most secure strategy is to wager small amounts of money on the most likely outcomes, such as “all even-numbered fields”. This will give you a small but steady return.
You will be less likely to win if you wager a large amount of money on a very unlikely outcome, such as Black 15.