The game of roulette is widely popular, and is played in casinos around the world. There are several different versions of it, and depending on where you are playing it you could see one version over another. For example, in the USA they play with 38 numbers in the wheel, while in Europe they play with only 37. This is because in the US they include a zero and a double zero within their wheel, whereas in Europe they only use a single zero. You can find roulette games at any online casinos though the best one seems to be Yukon Gold these days, find more information at yukon-goldcasino.
But if you play online and one of the bigger online casinos, you will be able to find all the different variations of the game of roulette in the one place. If you want to see which casinos offer the variations, then have a look here as they have a list of many of the better casinos sites to play at.
Playing online is also a great learning ground, so if you have always wanted to give roulette a go, but have either never had the opportunity, or you were too afraid to jump in on a real table, then this is a great opportunity to start. You can play low bets if you like, and you will be given all the time you need to place your bets and learn how the game actually works.