Every casino is designed to entice you into spending your money. From lights to sounds to physical design, casinos use everything they can to keep you there. But how do they do it? Business Insider recently took a tour of a casino in Macau and uncovered some tried-and-true marketing strategies.

People at a casino are a diverse bunch: You’ve got the folks who strut in with confidence and plan to win big, and the ones who just want to make back what they lost last time. But they all share one thing in common: They have a good time. The music blares, coins clink, and people cheer each other on. The positive energy makes it hard to remember that your bank account is getting drained.

And then there’s the booze. It’s always flowing in the casino and, combined with the flashing lights, is enough to distort your judgment. Plus, there are no clocks inside a casino because the owners want you to lose track of time and forget how much you’ve spent.

While the opulence and neon signs in Casino are unmistakable, Scorsese takes a harder look at Vegas’s dark side. His movie depicts greed, corruption, and violence in ways that are both shocking and compelling. He’s also able to balance this dark side with a surprisingly touching love story between Ace and Ginger. And, despite the fact that all of the major players in Casino are corrupt and self-serving, we can’t help but root for them to get their comeuppance.