Market Games

Market making games are skill-based browser simulators built around the core tasks of a proprietary trader: quoting a two-way price, managing inventory and spread, and taking the other side when edge appears. They are designed to develop the same fast, probabilistic decision making that firms like Optiver, IMC, Flow Traders, SIG and Jane Street screen for during their interviews and trials.

The easy difficulty of every game is always free and will stay that way forever, with no login required. A free account saves your scores and history; Tradermath Premium unlocks the Medium, Hard and Custom difficulties.

Each game ships with easy, medium and hard difficulties, plus a custom setting on Premium. Stepping up shortens the time per decision and adds rounds, and what else changes depends on the game: market events switch on, helper information like your balance is hidden, or more of the traders you face turn out to know something you do not. Your best result per game and per difficulty is stored on the market games dashboard so you can track improvement over time, as P&L in the trading games and as a points score in Fermi Estimation and Event Contracts.

Yes. The Trading Game and Market Making Dice Game drill the exact quoting and inventory questions that show up in Optiver and Flow Traders assessments. ETF Arbitrage mirrors the mispricing identification questions that are common at IMC and Jane Street. The Card Game reflects expected value questions asked by SIG. Fermi Estimation is a direct echo of the brainteasers used by almost every proprietary trading firm. Event Contracts covers the newest of these seats: turning a base rate and a piece of news into a probability, then quoting it two-sided against traders who may know more than you do.

Trading Game and Market Making Dice Game build spread discipline, inventory awareness and two-way pricing. ETF Arbitrage builds cross-asset pricing and reaction speed against competing traders. Card Game builds expected value intuition and edge detection. Fermi Estimation builds calibration of confidence intervals and Bayesian updating under uncertainty. Event Contracts builds Bayesian updating in odds form, quoting in probability space, and the judgement of how wide to be when some of the flow is informed.

Not at all. The easy difficulty of each game teaches the core concept step by step, which makes the games well suited to students, career switchers and early-career traders. What matters most is comfort with quick mental math and probability, both of which the games themselves help you develop.