The beauty of Internet casinos for Australian gamblers is that you can enjoy lots of interesting variants. In American Roulette, there is an additional double-zero (00) available. In European Roulette you also have a single green zero (0) to bet on. They play in a similar way, with 1-36 numbers available to bet on. At the big land-based casinos in Melbourne and Sydney, you will usually be restricted to one or two variants: American Roulette or European Roulette.