It is described a roulette of a new type including two bowls coaxial to each other and rotating around the same axis and two small balls, each ball rolling around one of the bowls, where on each bowl are engraved data which refer to an independent event. On a first embodiment, the two independent events are: the signs of the zodiac, the numbers from 0 to 31, where the signs of the zodiac are preferably engraved on the external, ring-shaped bowl, while the numbers from 0 to 31 are preferably engraved on the internal bowl. On a second embodiment, the events engraved on the two bowls are related to one or more of the calendars used in Asiatic countries (China, Korea, Japan and so on). Furthermore, a new gambling game providing for the use of said improved roulette is described.