roulette [roo-let]
noun
1. A game of chance played at a table marked off with numbers from 1 to 36, one or two zeros, and several other sections affording the players a variety of betting opportunities, and having in the center a revolving, dishlike device into which a small ball is spun to come to rest finally in one of the 37 or 38 compartments, indicating the winning number and its characteristics, as odd or even, red or black, and between 1 and 18 or 19 and 36.
Russian roulette [ruh-shun-roo-let]
noun
1. A game of high risk in which each player in turn, using a revolver containing one bullet, spins the cylinder of the revolver, points the muzzle at the head, and pulls the trigger.
EX. Some say meeting new people on the internet, much less than trying to find dates, is a dangerous game of Russian roulette. Another game of chance can be found on the wholly enjoyable, Pokémon Showdown.