Casinos are incredibly profitable businesses, and their success relies entirely on cold, hard mathematics.

This guaranteed profit margin is known universally throughout the industry as the "house edge."
The Secret of the House Edge
If a game paid out at exactly the true odds, the casino would eventually break even and go bankrupt.

Take European roulette, for example: there are 37 numbers on the wheel, making the true odds 36 to 1.
Every single game has a mathematically defined edgeIt represents the percentage of each bet the casino keepsSkill-based games usually offer lower house edges What is RTP in Casino Games?
While table game players talk about house edge, slot machine players focus on Return to Player (RTP).

This means that over millions of spins, the machine will pay back $95 for every $100 wagered.
Finding the Best Casino Odds
If you want to stretch your bankroll and maximize your chances, you must play low-edge games.

Avoiding high-edge games is the easiest and most effective strategy for any casino visitor.
Casino GameAverage House EdgePlayer Skill NeededBlackjack0.5% (with strategy)HighEuropean Roulette2.70%None
You cannot defeat the math, but you can choose the games that give you the fairest possible fight.