Machi Koro

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

Overview

Machi Koro is a fast-paced city-building card game where each player is the mayor of a small town, rolling dice to earn income from establishments and using that income to build new establishments and landmarks. The first player to complete all four of their landmark cards wins.

Components

Setup

  1. Each player places their 2 starting establishments face-up: 1 Wheat Field and 1 Bakery.
  2. Each player places their 4 Landmark cards face-down (Under Construction): Train Station, Shopping Mall, Amusement Park, Radio Tower.
  3. Create a marketplace by arranging all Supply cards in stacks by type, ordered by activation number (lowest to highest).
  4. Give each player 3 coins. Form a bank with remaining coins.
  5. Determine starting player.

Turn Structure

Each turn consists of three phases in order:

  1. Roll Dice
  2. Earn Income
  3. Construction

Actions

1. Roll Dice

2. Earn Income

All establishments with activation numbers matching the dice roll trigger their effects. Activation order:

Priority Type Color When Activates
1st Restaurants Red On any player’s turn; take coins from the roller
2nd Primary Industry Blue On anyone’s turn; get coins from bank
2nd Secondary Industry Green On your turn only; get coins from bank
3rd Major Establishments Purple On your turn only; special effects

3. Construction

The player may build ONE of the following:

Restrictions:

Scoring / Victory Conditions

The first player to complete all 4 of their Landmarks wins immediately.

Special Rules & Edge Cases

Landmark Effects

Landmark Cost Effect
Train Station 4 coins May roll 1 or 2 dice
Shopping Mall 10 coins Bakery/Cafe type cards earn +1 coin each
Amusement Park 16 coins If you roll doubles, take another turn
Radio Tower 22 coins Once per turn, you may re-roll your dice

Player Reference

Card Type Color Activation
Primary Industry Blue Anyone’s roll; income from bank
Secondary Industry Green Your roll only; income from bank
Restaurants Red Others’ rolls; take from the roller
Major Establishments Purple Your roll only; special effects