Black Friday

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

Overview

Black Friday is a stock market game where players are speculators trying to accumulate the most gold before the inevitable stock market crash. Players buy and sell shares in five colored companies, manipulate share prices, and spend cash to purchase gold bars. The game features the M.I.B.S. (Minimally Intelligent Broker Service) as an automated opponent for 2-4 player games. The player with the most gold at the end wins.

Components

Setup

  1. Place the game board matching your player count (2-4 side or 5 side).
  2. Place share price tokens on the 8th space of the share price table.
  3. Place gold tokens on space “20” of the gold price track and space “0” of the purchased gold bars track.
  4. Fill the bag with shares (remove 1 of each color for 2-4 players).
  5. Place shares on the share market: 4 per space (2-4 players) or 5 per space (5 players).
  6. Randomly draw 20 shares from the bag and add to the share market.
  7. Adjust share prices: most scarce color moves to space 10, most common moves to space 6.
  8. Place 2 shares of each color and 6 black shares on the “share sale” tracks.
  9. Place 9 black shares on the share price table.
  10. Each player draws 5 shares from the bag (hidden behind screen) and takes $100.
  11. Determine starting player; distribute bonus tiles to non-starting players.
  12. M.I.B.S.: Required with 2 players (plays as 3rd player); optional with 3-4 players.

Turn Structure

Players take turns in order. On your turn, you must perform exactly one of the following actions:

  1. Buy shares from the share market
  2. Sell shares to the share sale track
  3. Buy gold

After each player’s turn, the share market and prices are updated.

Actions

Buy Shares

Sell Shares

Buy Gold

Market Updates

After each turn:

Scoring / Victory Conditions

Special Rules & Edge Cases

M.I.B.S. (Automated Opponent)

Black Shares

Level Tiles

Bonus Tiles

Player Reference

Action Description
Buy Shares Buy 1-6 shares of one color at current price
Sell Shares Sell 1-6 shares of one color at current price
Buy Gold Spend cash for gold bars at current gold price
Gold Bar Values  
Small bar 1 gold
Big bar 5 gold
Game End Stock market crash
Winner Most gold bars
Tiebreaker Most cash