Roulette: Called (or Call) Bets

There are a number of series in roulette that have special names attached to them. These are placed by betting a set amount per series (or multiples of that amount). They are based on the way in which certain numbers lie next to each other on the roulette wheel. Not all casinos offer these bets, and some may offer additional bets or variations on these.

• Voisins du Zero (Neighbors of Zero)
• Tiers (The third)
• Orphelins (Orphans)
• xx and the Neighbors

From Wikipedia's