Since its invention in the 18th century, roulette has undergone some evolutional changes as it spread across the world. The most notable change in the game that was first played in France is the additional one slot in the American version. The rise of online gambling has also had an effect on how roulette is played worldwide.
'Russian roulette' may be a popular phrase but no, that is not a type of roulette!
Here's an overview of the different types of roulette: