Anti-Monopoly

AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant

Overview

Anti-Monopoly is a board game in which players do not all play by the same rules. At the start, each player chooses (or is assigned) a role as either a Competitor or a Monopolist. Competitors and Monopolists have different rules for rent, building, taxes, and penalties. The game can be won by bankrupting all opponents (Game A) or by being the richest player of your type after the opposing type is eliminated (Game B).

Components

All dollar amounts represent values in thousands.

Setup

  1. Select one player as the Treasurer to manage and distribute money, title cards, houses, and apartments.
  2. Shuffle and place the Monopolist and Competitor card decks face down on their board spaces.
  3. Role Division: Players divide evenly into Competitors and Monopolists (difference of at most 1). Roll dice; highest roller chooses their role first, then others choose clockwise. Roles are fixed for the game.
  4. Each player receives $1,500: two $500, three $100, two $50, seven $10, five $5, and five $1.
  5. All players place tokens on START. Competitors use green pawns; Monopolists use blue pawns.

Turn Structure

  1. Roll both dice.
  2. Move your token clockwise the number of spaces indicated.
  3. Resolve the space you land on (buy property, pay rent, draw card, etc.).
  4. If you rolled doubles, take one extra turn (doubles on the extra turn do not grant another turn).

Actions

Property Purchases (Rule 9):

Monopolizing a City (Rule 10):

Building Houses & Apartments (Rule 11):

  Competitors Monopolists
Build on Any street they own Only in monopolized cities
Max houses 4 per street 3 per street
Apartment Replace 4 houses with 1 apartment Replace 3 houses with 1 apartment

Mortgages (Rule 12):

Returning Houses (Rule 13):

Scoring / Victory Conditions

Game A: Win by bankrupting all other players.

Game B: Be the richest Competitor after all Monopolists are bankrupt, or be the richest Monopolist after all Competitors are eliminated. Richest = cash + income earnable on unmortgaged properties when one player lands on them.

Two-Hour Game Variant:

  1. Players adjust holdings by buying/selling houses and mortgaging (only with Treasurer).
  2. Competitors keep 10% of remaining cash; Monopolists keep 20%. Rest goes to Treasury.
  3. Treasurer travels once around the board, paying rent/fees to owners as normal.
  4. Player with the most cash wins.

Special Rules & Edge Cases

Landing Spaces:

Transportation Companies (Rule 19):

Utilities (Rule 20):

Bankruptcy (Rule 24):

Trading (Rule 23): Allowed between players except for houses/apartments. Houses must be returned to the Treasurer before trading properties.

Borrowing (Rule 26): Players may NOT borrow from other players.

Player Reference

Space Type Competitor Effect Monopolist Effect
Prison/Price War Price War (still collects rent) Prison (no rent collected)
Income Tax $200 or 10%/10%/10% $200 or 20%/10%/10%
Transportation 10% return always Fares double per company
Utilities 4x dice always 4x dice (1 owned) / 10x (both)
Anti-Monopoly Foundation Roll: 1=$25, 2=$50 Pay $10
Building Up to 4 houses, then apartment Up to 3 houses, then apartment (monopolized only)
START Collect $100 Collect $100