Roulette is one of the most iconic and visually thrilling games available on any casino floor.

Understanding the difference between the American and European variations is the most crucial strategy in the game.

The Green Zero: The House's Secret Weapon

The European roulette wheel features 37 slots in total: numbers 1 through 36, plus a single green zero.

Conversely, the American layout adds an extra green slot—the double zero—significantly altering the math of the game.

• The single zero is the only reason the casino makes a profit on Red/Black or Odd/Even wagers
• Adding a second zero effectively doubles the speed at which you will statistically lose your bankroll
• The visual layout of the numbers on the wheel itself is also completely different between the two versions

Advanced European Roulette Rules

Certain high-end European tables utilize the 'La Partage' rule, which further reduces the house advantage.

The 'En Prison' rule allows your even-money bet to remain 'in prison' for the next spin if a zero hits, giving you a second chance.

By simply choosing the European wheel, you instantly double your expected mathematical longevity at the casino.