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  1. Sin City
  2. Lore

14. Private Games and Underground Gambling

Underground Gambling in Sin City

Private and underground gambling exists outside ordinary casino oversight. Games may be hosted in back rooms, warehouses, luxury apartments, garages, private clubs, dockside buildings, abandoned businesses, or temporary venues that move before police can identify them.

These events may offer higher stakes, illegal wagers, anonymous entry, restricted clientele, or games unavailable through licensed casinos.

Before play begins, Franz should establish:

  • Who controls the venue

  • How entry is obtained

  • What game or event is offered

  • Minimum and maximum stakes

  • Whether credit is allowed

  • How winnings are paid

  • What security is present

  • What happens when someone refuses to pay

Not every underground game is rigged. Many organizers depend on a reputation for fair results and reliable payouts.

Access, Invitations, and Security

Entry may require:

  • A trusted introduction

  • A password

  • A membership token

  • A minimum buy-in

  • Faction approval

  • A background check

  • Surrendering weapons

  • Agreeing to house rules

Security may include armed guards, lookouts, cameras, phone collection, searches, locked exits, vehicle checks, or hidden escape routes.

Some venues maintain strict neutrality. Violence inside may result in permanent exclusion or retaliation from several factions.

Others are controlled by a single criminal group and offer no meaningful protection from the host.

Private Gambling Games

Private games may include:

  • High-stakes poker

  • Blackjack

  • Baccarat

  • Dice games

  • Roulette

  • Sports pools

  • Racing wagers

  • Property or favor-based betting

  • Custom games created by the host

Use the relevant game-specific Lore page when normal rules apply.

Private house rules must be explained before the wager unless deliberate deception is part of the scene and players have a reasonable chance to uncover it.

Extreme stakes may include:

  • Vehicles

  • Property

  • Businesses

  • Confidential information

  • Criminal services

  • Political favors

  • Faction access

  • Debt forgiveness

  • Future employment

A host may refuse cash and demand something only the gambler can provide.

Underground Fight Betting

Illegal fight betting may involve:

  • Bare-knuckle boxing

  • Unsanctioned martial arts

  • Warehouse cage fights

  • Gang-controlled contests

  • Prison fights

  • Private exhibitions

  • Armed or improvised-weapon matches

  • Team fights

  • Fixed contests involving hired professionals

Franz should distinguish consensual fighters from people forced to participate. Coerced combat, trafficking, threats against families, or fights designed as executions are serious crimes and should be treated accordingly.

Common wagers include:

  • Winner

  • Method of victory

  • Exact finishing round

  • Whether the fight reaches the final round

  • Knockout, submission, stoppage, or decision

  • First fighter knocked down

  • Total number of knockdowns

  • Whether a fighter completes the match

Before accepting a wager, establish the odds and payout.

Suggested simplified odds:

  • Heavy favorite: Risk 2 GP to profit 1 GP

  • Moderate favorite: Risk 3 GP to profit 2 GP

  • Even fight: Risk 1 GP to profit 1 GP

  • Moderate underdog: Risk 1 GP to profit 2 GP

  • Heavy underdog: Risk 1 GP to profit 4 GP

When player characters compete, resolve the fight through normal combat rules. The betting result follows the actual outcome.

When NPCs fight off-screen, use the Sports Betting resolution rules or roll for each fighter:

  • Heavy favorite: +4

  • Moderate favorite: +2

  • Even fighter: +0

  • Moderate underdog: –2

  • Heavy underdog: –4

Each fighter rolls 1d20. The highest result wins. A difference of 5 or more may represent a decisive finish. A difference of 10 or more may represent an early knockout, submission, or stoppage.

Established injuries, cheating, exhaustion, or sabotage may adjust the roll by 1–3 points.

Fixed Fights and Illegal Manipulation

Fight fixing may involve:

  • Paying a fighter to lose

  • Threatening a fighter or family member

  • Bribing judges or referees

  • Hiding an injury

  • Tampering with gloves or equipment

  • Drugging a participant

  • Changing the opponent at the last moment

  • Deliberate early stoppage

  • Controlling medical clearance

  • Planting false information to shift odds

A fighter ordered to lose may still change their mind during the contest.

Inside information may be accurate, outdated, exaggerated, or deliberately planted to attract wagers.

Suspicious signs include:

  • Sudden odds changes

  • Large bets from trainers or associates

  • A favorite fighting far below normal ability

  • A fighter avoiding obvious opportunities

  • Unusual medical decisions

  • A referee intervening inconsistently

  • Several connected bettors choosing the same unlikely result

Illegal Bookmakers and Payouts

Underground bookmakers may accept:

  • Cash

  • Casino chips

  • Digital transfers

  • Contraband

  • Property

  • Favors

  • Credit

They may offer anonymity, higher limits, unusual wagers, and access to illegal events.

They may also:

  • Alter records

  • Refuse payment

  • Change odds after the wager

  • Sell customer information

  • Demand early repayment

  • Use violent collectors

  • Claim a result was invalid

A reliable bookmaker pays legitimate winners because their business depends on trust.

A dishonest bookmaker may remain protected by faction power, fear, or control of the venue.

Cheating, Debt, and Enforcement

Underground cheating may include marked cards, loaded dice, dealer collusion, false chips, hidden signals, hacked records, altered odds, drugged competitors, or manipulated equipment.

Detection may use:

  • Perception

  • Insight

  • Investigation

  • Technical tools

  • Informants

  • Witnesses

  • Betting records

  • Physical inspection

Consequences depend on the host and the amount involved.

Possible responses include:

  • Confiscated winnings

  • Ejection

  • Public humiliation

  • Blacklisting

  • Debt demands

  • Forced work

  • Assault

  • Kidnapping

  • Faction retaliation

  • Quiet recruitment

Most organizers prefer repayment, leverage, or future service over immediate killing.

An underground debt should establish:

  • Amount owed

  • Due date

  • Interest

  • Collateral

  • Guarantor

  • Default consequences

Violence may follow default, but surveillance, pressure, blackmail, property seizure, and forced employment are often more profitable.

Using Underground Gambling During Play

Underground gambling should create access to people, information, debts, rivalries, and dangerous opportunities.

Franz should clearly establish:

  • The host

  • The rules

  • The stakes

  • The odds

  • The security

  • The known consequences

  • Whether the event is fair, suspicious, or openly rigged

Players decide whether to gamble, compete, cheat, investigate, negotiate, expose the operation, or walk away.