I've Been Obsessed with Roulette for the Past Few Years
Over the past few years, I’ve spent a lot of time thinking about gambling games—especially roulette.
I dove deep into statistics books, tried all kinds of strategies—from Martingale to D’Alembert—and studied probabilities inside and out.

There were times when I won quite a bit, too.
But in the end, I always lost more than I won.

Below, I’m sharing what I’ve learned and observed throughout this journey. Maybe it’ll offer some perspective to others walking the same path.
How Do Casinos Always Win?
All gambling games are statistically designed for the house to win in the long run.
Take roulette, for example:
It’s played with 36 numbers + 2 green “0” slots (in American roulette),
which gives the house a 5.26% edge.
The longer you play, the more likely you are to lose—because probability always favors the house.
The Martingale Strategy
One of the most popular systems among roulette players is the Martingale strategy.
It’s very simple: double your bet after every loss so that when you eventually win, you recover all previous losses and gain a profit equal to your first bet.
Example: 1 → 2 → 4 → 8 → 16 → 32 → 64 → 128 → 256 → 512 → 1024...
It sounds logical in theory. But in practice, it’s a different story:
Every table has a maximum bet limit. So even if you have infinite money, you eventually hit a ceiling and can’t keep doubling.
And if you don’t have infinite money, the rapid doubling will drain your bankroll very quickly after just a few losses in a row.
Another common mistake is misunderstanding the independent nature of each roulette spin.
Just because black has come up 10 times in a row doesn’t make red more likely on the 11th spin.
Can You Really Win?
Roulette is fun and can feel profitable in the short term.
Yes, you can win sometimes.
But in the long run, the math is always in favor of the house.
If you play knowing that and just want to have fun, then it’s no problem.
But if you're sitting at the table to make money—you’re in the wrong place.