CLASSIFIED // OPERATION WORLD
Party-Strategy Hybrid · TIER 3

UNDER
WORLD

> Five families. Five vendettas. Tight, sharp, lethal.

// Peace is possible with everyone except your Vendetta target. But your Vendetta target may be at peace with everyone, including you.

PERSONNEL FILE
FORM 7-A

ACTIVE COMBATANTS

5★ OPT 5
ETA: 40–60 min
5–5 OPERATIVES
SECTOR 02 // BRIEFING
FILE 02 — THE PREMISE
// PINNED 0700 HRS //

5 crime families share a city. Each turn families negotiate territory, but every family also has a hidden Vendetta (a specific family they MUST eliminate to win). Mafia × Risk × Diplomacy.

CRITICAL TENSION:Peace is possible with everyone except your Vendetta target. But your Vendetta target may be at peace with everyone, including you.
SECTOR 03 // PERSONNEL
DECLASSIFIED PERSONNEL DOSSIERS

The Roles

CLEARED
ID-001
Family Boss

Family Boss

×5

Each leads a family. Each has a Vendetta target known only to them.

SECTOR 04 // OPERATIONAL TEMPO
OPERATIONAL TIMELINE

How a Round Plays

I
PHASE

Open negotiation

Families negotiate territory openly. Verbal deals are non-binding.

STEP 01
II
PHASE

Secret deployment

Each family secretly assigns Soldiers to Territories.

STEP 02
III
PHASE

Reveal & combat

Deployments reveal simultaneously. Combat resolves per matrix. Eliminations occur.

STEP 03
SECTOR 05 // OBJECTIVES
INCOMING DISPATCHES

Win Conditions

TELEGRAMNO. 001
▣OBJECTIVE — Last Family Standing

Every other family eliminated.

// END OF MESSAGE — STOP //
TELEGRAMNO. 002
▣OBJECTIVE — Vendetta Victory

Eliminate your Vendetta target while still having 3+ Soldiers.

// END OF MESSAGE — STOP //
SECTOR 06 // INTELLIGENCE
FIELD MEMO

Designer Notes

It's Mafia × Risk × Diplomacy in a tight package. The Vendetta mechanic ensures conflict (no all-peace stalemate) but also creates fascinating "we both want to kill the same guy" alliances. 5-player ring of Vendettas creates predictable but exploitable structure.

✎  reviewed & cleared by command — F.O.
FIELD INTEL

Strategy

  • 01.
    Find shared vendettas
    Two families with overlapping vendettas should ally — briefly.
  • 02.
    Don't attack until you know
    An early attack tells everyone who your vendetta is.
  • 03.
    Soldier reserves matter
    You need 3+ Soldiers AT THE END for vendetta victory. Don't bleed dry.
↳ keep this on you, soldier.
SECTOR 07 // DEPLOYMENT
EYES ONLY // DEPLOYMENT ORDERS

Ready to Deploy?

> Pass-and-play with operatives in the same room, or open a remote command channel and brief allies across the globe.

About Underworld

5 crime families share a city. Each turn families negotiate territory, but every family also has a hidden Vendetta (a specific family they MUST eliminate to win). Mafia × Risk × Diplomacy.

5-5 players (best with 5) · 40–60 min · Party-Strategy Hybrid

How a round plays out

  1. Open negotiation

    Families negotiate territory openly. Verbal deals are non-binding.

  2. Secret deployment

    Each family secretly assigns Soldiers to Territories.

  3. Reveal & combat

    Deployments reveal simultaneously. Combat resolves per matrix. Eliminations occur.

Roles

Family Boss(5)
Each leads a family. Each has a Vendetta target known only to them.

How to win

Last Family Standing
Every other family eliminated.
Vendetta Victory
Eliminate your Vendetta target while still having 3+ Soldiers.

Tips for new players

Find shared vendettas
Two families with overlapping vendettas should ally — briefly.
Don't attack until you know
An early attack tells everyone who your vendetta is.
Soldier reserves matter
You need 3+ Soldiers AT THE END for vendetta victory. Don't bleed dry.

What makes it interesting

It's Mafia × Risk × Diplomacy in a tight package. The Vendetta mechanic ensures conflict (no all-peace stalemate) but also creates fascinating "we both want to kill the same guy" alliances. 5-player ring of Vendettas creates predictable but exploitable structure.

Peace is possible with everyone except your Vendetta target. But your Vendetta target may be at peace with everyone, including you.