Portcullis - Fanzine: Variant Rules: The High Roller's Handbook

This system provides a framework for managing gambling dens, from humble back-alley rings to majestic arcane casinos. It balances atmosphere with mechanics, allowing players to use their skills and magic to influence the odds.

At the Threshold

The air hangs thick with pipe smoke, spilled stout, and copper sweat. Across the floor, ivory dice clatter against felt, coins ring out like miniature anvils, and sharp laughter dies abruptly at the turn of a card. The house always welcomes new coin—so long as your hands stay above the wood.

1. House Tiers & The Heat System

Gambling dens vary in prestige, cost, and difficulty. Operating in them involves managing House Heat (0–5), which tracks how closely pit bosses and security watch the players.

Tier	Venue Type	Buy-In / Limits	Security DC / Insight	Security & Intel
I	The Back-Alley Ring	1 sp – 2 gp	DC 10 Sleight of Hand Passive Insight 12	Thugs with clubs; street gossip, fencing stolen goods.
II	The Merchant's Hall	5 gp – 50 gp	DC 13 Sleight of Hand Passive Insight 14	Bouncers with crossbows; trade speculation, shipping manifests.
III	The Grand Gilded Casino	50 gp – 500 gp	DC 16 Sleight of Hand Passive Insight 16	Detect Magic lanterns; high-court bribes, debt leverage on nobles.
IV	The Astral/Arcane Vault	500+ gp / Souls / Relics	DC 19 Sleight of Hand Passive Insight 18	True Seeing, anti-magic fields; planar contracts, divine artifacts.

The Heat Track (Per Session)

Heat 0–1 (Clear): Standard play; dealers are polite and observant.
Heat 2–3 (Watched): A floorman stands behind the players. Cheating DCs increase by +3.
Heat 4 (Pressured): The dealer begins to swap out decks/dice. The maximum bet is capped at the current pot size.
Heat 5 (Busted): The game stops immediately. Heavy security moves in to enforce the Tier consequence.

Gaining Heat

The party or player begins each visit at Heat 0. Add Heat points as follows:

Cheating Failures (+1 to +5):
- Failed by 1–4: +1 Heat. The dealer or pit boss notices a clumsy motion, a misplaced card, or odd die bounce.
- Failed by 5 or more: Instantly maxes Heat to 5. You were caught red-handed.
The "Hot Streak" (+1 Heat): Winning three consecutive rounds at any table adds +1 Heat. The house begins tracking the anomaly.
Large Single Payout (+1 Heat): Hitting a high-multiplier win (such as Split Bone at 16:1 or a maximum table bet) adds +1 Heat.
Causing a Scene (+1 to +2 Heat): Loud arguments, visible intimidation checks against patrons or dealers, or drawing weapons immediately adds +1 or +2 Heat depending on severity.

Cooling Down

Players can reduce Heat during the night using deliberate actions:

Taking a Walk (-1 Heat): Stepping away from the tables for at least 30 minutes (buying a round at the bar, watching entertainment, or mingling). Resolved between rounds or during a lull in play.
The Strategic Loss (-1 Heat): Deliberately throwing a bet equal to or greater than the table's minimum buy-in resets a suspicious dealer's attention. Performed during any active betting round.
Greasing Palms (-1 Heat): Slipping the pit boss or dealer a discreet tip (equal to 10% of total winnings, minimum 5 gp) with a DC 12 Persuasion check. Performed immediately after a hand.

Heat 5: The Busted Table

When Heat hits 5, the house enforces immediate penalties based on venue prestige:

Tier I (The Alley Ring): A rough alley shakedown. The offender forfeits all active bets and takes 2d6 bludgeoning damage from heavy clubs before getting tossed into the gutter.
Tier II (The Merchant's Hall): Confiscation and holding. Current winnings are seized, and the player is charged a 20% fine of all coin on hand or handed over to municipal watchmen.
Tier III (The Gilded Casino): Permanent blacklisting, full seizure of the night's earnings, and a forced high-interest debt marker owned by a prominent noble house.
Tier IV (The Arcane Vault): Dimensional containment. The player is placed under a planar binding or locked in an extradimensional vault until a rescue, trade contract, or divine relic ransom is negotiated.

2. Cheating Mechanics: Push Your Luck

Players can attempt to rig any game using skills or spells. If a cheating check fails by 5 or more, House Heat instantly maxes to 5.

Sleight of Hand (Palming/Loaded Dice): Beat the venue's DC to change one rolled die to any desired result.
Deception / Insight (Tells & Bluffing): Beat the dealer's Passive Insight (Tier I: 12, Tier II: 14, Tier III: 16, Tier IV: 18) to peek at an opponent's hidden die or card.
Minor Magic: Spells like Prestidigitation, Mage Hand, or Guidance can influence the game. These require a Dexterity (Stealth) check vs. the House Security DC to cast without somatic or verbal detection.

3. The Gambling Suite (Mini-Games)

House Rules & Slang

Before sitting down at the felt, every seasoned sharp knows the local vernacular:

The Float: The visible pile of coin on the baize. "Hands off the float until the bones stop tumbling."
Cold Iron: Non-magical inspection. Patrons must touch a cold iron horseshoe at the door to dispel illusions.
A Soft Plum: A visibly wealthy mark with no head for math or odds.
Greasing the Felt: Tipping the dealer to subtly reshuffle or distract a rowdy opponent (+1 to one cheat check).
The Blind Eye: When security deliberately ignores a dispute so long as nobody draws steel.
Walking the Plank: Being physically tossed into the muddy street with an empty purse.

A. Liar's Skull (Bluffing & Deduction)

Best for: 2–6 Players or Player vs. Dealer. Fast-paced bluffing.

Each participant rolls 3d6 under a cup, keeping their results hidden. (Note: 1s are not wild; they count as normal face values).
The first player declares a face value and a minimum count present across all cups at the table (e.g., "There are at least four 5s").
Players act in turn clockwise. A player must either:
- Raise: Call a higher quantity of any number, or the same quantity of a higher number (e.g., "Five 5s" or "Four 6s"). This passes the turn to the next player.
- Call Bluff ("Open Cups"): All dice are revealed immediately, ending the round.
Outcome: If the total count is equal to or greater than the claim, the caller loses their bet. If the count is less, the bluffer loses.
Skill Synergy: A player may make a DC 13 Wisdom (Insight) check once per game to deduce whether the current bidder is bluffing.

B. Dragon's Eye (High-Stakes Blackjack Style)

Best for: Player vs. Dealer. Push-your-luck mechanic.

The target number is 21. Both player and dealer roll 2d10 openly (1s count as 1 or 11).
The Breathe: The player may "Breathe" (Hit) by rolling an additional 1d6, adding it to their total. They can hit up to three times. If the total exceeds 21, they Bust and immediately lose their stake.
Dealer's Turn: Once the player holds, the Dealer must roll an additional 1d6 until their total reaches at least 17.
Payout: Closest to 21 wins a 2:1 return (double their wager). Hitting exactly 21 with a double (e.g., two 10s and a 1) is a "Dragon's Eye" and pays a 3:1 return (triple their wager). If the player and dealer finish with the exact same total, it is a Push (the player keeps their bet).

C. Chopping Copper (Raw Luck & Side Bets)

Best for: Rowdy, fast dive-bar gambling. Takes 30 seconds.

The Dealer rolls 1d20 into the ring (the "Mark").
Each player places a wager on one of three options:
- High Chop: The next roll will be higher than the Mark (Pays 2:1 return; ties are lost to the House).
- Low Chop: The next roll will be lower than the Mark (Pays 2:1 return; ties are lost to the House).
- Split Bone: The next roll will match the Mark exactly (Pays 16:1 return).
A player rolls the second 1d20 to resolve the round.

4. Casino Downtime Events (1d6)

Roll when characters finish a long night at the tables:

1. Marked Man: The house claims a counterfeit coin was used. Pay double or fight the bouncers in the alley.
2. The Broken High-Roller: A noble offers a family crest ring or treasure map worth 200 gp for a quick 50 gp loan.
3. Loan Shark's Offer: A wealthy patron offers to sponsor the party's next dungeon run in exchange for 30% of recovered relics.
4. Pit Boss Favor: Winning clean without gaining Heat earns the house's respect; the party gets free lodging and +1 on local Charisma checks.
5. Overheard at the High Table: An intoxicated merchant brags about an unguarded caravan leaving at dawn.
6. The Whammy: An eccentric gambler challenges the party's champion to a single high-stakes roll of a d100 for a strange magical trinket.

Trouble at the Cage (1d4)

Roll when players attempt to cash out substantial winnings:

1. Heavy Paper: The house pays out in promissory notes or trade ingots rather than coin, requiring a guildhouse visit to liquidate.
2. The House Cut: The cashier insists on an unmentioned 10% "municipal tax" or "service tithe" unless intimidated or persuaded otherwise.
3. The Trailing Shadow: A pair of debt-collectors or street urchins wait outside the doors to shadow whoever walks out with a heavy pouch.
4. The Friendly Challenge: The pit boss personally offers a complimentary top-shelf drink and a private high-stakes wager before letting the party leave.

For the second part of this article that details four sample "Pit Bosses", see here: High-Roller's Handbook - Pit Bosses

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Tuesday, September 1, 2026

Variant Rules: The High Roller's Handbook - Part 1