What is an underground casino?

An underground casino, also known as an illegal casino or unlicensed casino, is a gambling operation that runs without proper licensing and regulation from gaming officials. Underground casinos may operate in secret locations or even in plain sight, posing as legal gaming establishments while flouting the law. Their unregulated nature makes them appealing to some gamblers but also carries significant risks.

What does an underground casino look like?

Underground casinos can take many forms. Some operate out of basements, warehouses, or nondescript buildings without any obvious signage. Others may try to pass themselves off as legal casinos, with bright lights and slot machines visible from the street. However, a closer look will reveal their true unlicensed status. Things to look for include:

  • Unmarked entrances or misleading signage
  • Windows blacked out or covered
  • Limited parking
  • No obvious security or surveillance
  • Makeshift table game and slot machine setups
  • General lack of professionalism in operations

Underground casinos try to maintain a low profile to avoid law enforcement detection. Though interiors may mimic legitimate casinos, discrete exteriors are a giveaway they are operating illegally.

Where are they typically located?

Underground casinos frequently set up shop in areas with high demand for gambling but limited legalized gaming options. Locations may include:

  • Urban areas with tourism and entertainment, like Los Angeles or New York City
  • Low-income neighborhoods
  • Areas with larger immigrant populations accustomed to gambling in their home countries
  • States bordering those with legal casinos like Nevada
  • Rural areas far from the jurisdiction of gaming officials

Areas with unmet demand make prime targets for illegal enterprises looking to start underground casinos. Operators also consider ease of remaining undetected by law enforcement when choosing locations.

Why do they exist?

Underground casinos persist for several reasons, even where legal gambling is available:

  • Unmet demand – In areas without enough legal gambling options or with suppressed legal gambling, underground casinos fill the void.
  • Tax avoidance – Unlicensed casinos offer better odds and bigger payouts since they don’t pay gaming taxes.
  • Anonymity – Patrons who want to gamble anonymously and avoid reporting winnings frequent underground casinos.
  • Thrill of the illicit – Some are drawn to the excitement and perceived glamour of illegal gambling.
  • Cultural familiarity – Immigrant communities may be accustomed to casual gambling back home and seek out underground casinos that allow such activity.

In short, underground casinos can thrive by providing something inaccessible, affordable, or socially normalized through legal channels. The high public demand gives these illegal operators a willing customer base.

What games are played?

Underground casinos tend to offer popular games like:

  • Poker
  • Blackjack
  • Roulette
  • Craps
  • Baccarat
  • Slots and video poker machines

Table games allow operators to run gambling dens discretely from ordinary-looking buildings. Slot and poker machines can draw unwanted attention, but may be included to boost revenue.


Poker is a popular centerpiece of underground gambling halls. Games like Texas Hold ‘Em can be set up quickly on ordinary tables in a variety of locations. Patrons also love poker as a game combining skill and chance.


Simple blackjack table layouts and familiar rules make blackjack another go-to game for illicit casinos. Operators can offer better odds and rules to attract players frustrated with restrictions at legal casinos.


Roulette requires minimal setup beyond a table and wheel, enabling underground versions. Higher payout bets like single numbers may have lower house edges than Nevada casinos offer, for example.


Craps draws crowds with its communal atmosphere. Underground operators can allow higher odds bets like the field or single rolls to sweeten the pot for players.


The simple card game baccarat has better odds for players than other casino games, if they bet on the banker. Underground casinos may use baccarat to appeal to superstitious gamblers or high rollers.

Slots and Video Poker

Illegal slot and video poker machines are riskier to operate than table games due to their large footprint. However, their familiarity makes them irresistible revenue generators. Back rooms of bars or convenience stores are common illegal slot machine hangouts.

How do underground casinos attract customers?

Running an illicit operation means underground casinos can’t advertise publicly like legal competitors. Instead, they rely on:

  • Word of mouth – Patrons pass on the location to friends and contacts.
  • Community connections – Operators leverage networks within immigrant enclaves or neighborhoods.
  • Social media – Promotion through private social media groups and messaging apps.
  • Limited online presence – Some indirect marketing through websites or forums.
  • Front businesses – Casinos concealed behind legitimate businesses draw local traffic.

Regulars and community ties are essential for underground casinos to drum up business. Owners may also invest in lavish, superior decor and amenities compared to legal casinos to impress and retain players.

Are underground casinos legal?

No, underground casinos violate a web of state and local gaming laws. Common illegal activities include:

  • Operating without a gaming license
  • Failing to pay gaming taxes
  • Non-compliance with regulatory standards
  • Safety and building code violations
  • Employment of unlicensed workers
  • Presence of illegal gambling devices
  • Money laundering
  • Violating alcohol laws

Las Vegas-style casinos require millions in licensing fees and regulatory compliance. Underground casinos dodge these requirements but risk severe criminal charges as a result.

What are the penalties?

Owners, employees, and even patrons of underground casinos can face stiff penalties if caught. Charges may include:

Crime Potential Penalties
Unlicensed casino operation Up to 5 years in prison and $20,000 in fines per day of violation
Gambling devices (slots/poker machines) possession Up to 2 years in prison and $5,000 in fines per machine
Money laundering Up to 20 years in prison and $500,000 individual / $10 million business fines
Tax evasion Up to 5 years in prison and owing back-taxes and interest
Conspiracy charges Adds up to 20 years in prison to other penalties

Law enforcement raids of underground casinos often lead to arrests and charges for proprietors and employees. Patrons may also face citations or misdemeanor charges in some jurisdictions.

Why should you avoid underground casinos?

Though they promise bigger payouts and added excitement, underground casinos come with drawbacks patrons should consider:

  • No player protections – Unlike legal casinos, underground operations have no oversight ensuring fair games and secure handling of player funds.
  • Violence risks – Lack of security and criminal element exposure creates unsafe environments.
  • Raids and shutdowns – Odds of being caught in a police raid are high, leading to arrests or citations.
  • Unsanitary conditions – Poor maintenance and circumvented regulations can make for dirty, hazardous setups.
  • Addiction concerns – Underground casinos often enable compulsive gambling with lax rules and nonstop operation.

The risks and downsides combine to make underground casinos a poor alternative to legal, regulated gaming options in most areas now. Safer bets come with playing at licensed, controlled gambling venues.

Are underground casinos dying out?

Trends in recent decades have made underground casinos less prevalent in the U.S., though they still persist. Contributing factors include:

  • Gaming expansion – More legal gambling across the country leaves less demand for illegal options.
  • Improved enforcement – Sophisticated tactics make illegally operated casinos easier to locate and shut down.
  • Cultural shifts – Increased social acceptance of legal gambling gives less reason to seek out illegal clubs.
  • Online gambling – Offshore and state-regulated online casinos provide convenient access to games.
  • Pandemic Impact – COVID-19 shutdowns forced many underground casinos to close permanently.

Still, clusters of underground casinos remain where demand outweighs legal supply or regulation is weak. And new operations arise as laws and technology change. But the days of large-scale casino dens running openly are mainly in the past.


Underground casinos provide unlicensed, unregulated gambling options catering to player demand for bigger thrills and payouts. Though they once thrived as gambling was more taboo, underground casinos now operate on the shady fringes as legal wagering has expanded. Players must weigh risks like raids, safety issues, and lack of consumer protections before frequenting illegal betting halls. But with more regulated gambling accessible across the country, underground casinos largely function as relics of a different time.