When you walk into a casino, the lights are bright, champagne glasses are clinking and there’s a buzz of excitement. But behind the scenes, casinos have a lot of tricks to keep you gambling and spending money. Every sound, light and physical design of the casino is carefully designed to lead you deeper into your wallet. Check out the nine ways casinos use to trick you into spending more money:

Unless you’re lucky enough to hit a major jackpot on one of those multi-million dollar slots, odds are you won’t walk away with more money than when you entered the casino. That’s because the house edge—the average gross profit that a casino expects to make on each game—is always in their favor.

Even if you do have a winning streak, it’s unlikely that you can beat the house edge. That’s because the probability that your next hand will be better than the last is statistically impossible.

In his latest film, Casino, Scorsese combines this ambivalence with bravura set pieces (including a torture-by-vice sequence featuring a popped eyeball and a climactic baseball bat beating that had to be trimmed to avoid an NC-17 rating). But it’s De Niro who steals the show in the role of Nicky Santoro. His portrayal of a wise-guy with a conscience transcends the roughest edges of street violence and avarice. And although all the key players in the story are mired in greed, treachery and violence, we feel for them at the same time.