Market Maker
The card trading game
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Bid, ask, bluff. Outsmart the table like Gary Stevenson did in The Trading Game — win your seat on the trading floor. Free to play, Pro unlocks live trading.
Market Maker is a card game about market-making. Inspired by the card-based trading competition described in The Trading Game. Bid, ask, bluff and outsmart the table — just like Gary Stevenson did to win his internship.
Each player holds a private card. A set of community cards is revealed round by round. The true value of the hand is the sum of all cards — but nobody knows it yet. Your edge is how precisely you can estimate it, and how well you read your opponents.
HOW IT WORKS
You post a bid and an ask spread. Your opponents can buy from you or sell to you. The tighter your spread, the more trades you attract — but the greater your exposure if your estimate is wrong. At settlement, cards are revealed and profits are calculated exactly as on a real trading floor.
TWO TRADING MODES
Turn-Based: Quote, react, and adapt at your own pace. Study the market before committing.
Live Order Book: A 40-second live trading window with real-time AI re-quoting. Update your spread dynamically as new information arrives. The pressure is on.
YOUR OPPONENTS
Rookie — noisy estimates, wide spreads, impulsive reactions
Shark — bluffs confidence, posts misleading quotes to trap you
Pro — tight spreads, reads your quotes to infer your private card, executes arbitrage
CAREER MODE
Work your way through a four-stage trading tournament.
Start at a university trading floor against rookies. Survive the sharps to reach MegaBank's live trading desk. Beat the firm's best algorithms and secure the internship.
ACHIEVEMENTS & GAME CENTER
17 achievements from First Flip (common) to Winner (legendary). Five leaderboards — all-time profits and per-stage career performance — ranked globally on Game Center.
ANALYTICS
Every hand ends with a full performance breakdown: P&L timeline, trade-by-trade edge quality, player comparison, and an Analyst Rating from S to D.
PRICE
Free to download. Upgrade to Pro to unlock Live Trading mode, career stages 3 and 4, and the Pro AI opponent — one purchase, no subscription.
DISCLAIMER
This is a fan-made recreation inspired by the card game described in Gary Stevenson's book The Trading Game. Not affiliated with, endorsed by, or connected to Gary Stevenson, Penguin Random House, or any related parties.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved AI - enables more sophisticated bluffing techniques.
The developer, Patrick Doig, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Patrick Doig
- Size
- 14.7 MB
- Category
- Card
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- In-App Purchases
Yes
- Market_Maker Pro $1.99
- Copyright
- © 2026 South London Silicon
