Rates rise, so leveraged companies pay more to service debt, so earnings fall, so the price falls. That chain is modelled end to end — which is why the lessons transfer.
GDP, inflation via the Phillips Curve, unemployment via Okun’s Law, and the Fed rate via the Taylor Rule. Each one feeds the next.
Quarterly earnings, debt service, and Merton distance-to-default — so bankruptcies happen for reasons you can see coming.
GARCH(1,1) with a shared factor model. Quiet weeks stay quiet; correlations converge on 1 when the VIX passes 40.
Black–Scholes with live Greeks and an implied-vol surface that crushes about 30% the morning after earnings.
Elections, legislation and lobbying apply real sector modifiers. A bill at floor vote is priced before it passes.
Value, momentum, day-trading and raider strategies that react to volatility and the economy, not to you.
Entirely. No account, no download, no payment, no ads.
Your entire game lives in your browser. There is no account to leak, and clearing site data deletes the save permanently.
It teaches the concepts — reading a chain, sizing a position, what a rate decision does to a sector. It is not advice, and it is not connected to real prices.
Yes — a separate touch interface, not a squeezed desktop. Any modern browser.
Single-player against five to ten AI rivals, depending on difficulty, plus an optional daily-challenge board.
Stocks · Options · Corporate bonds · Crypto · Forex · Prediction markets · Real estate
Plus founding a company, taking it public, running a hedge fund, and playing across generations.
Any current browser on desktop, tablet or phone. Nothing to install, nothing to sign into.
In your browser, in IndexedDB. It never reaches a server — which also means clearing site data deletes it for good.
Built by Simon Coombes as a side project. Free, no ads, no account, and no plan to add any.
Report a bugEvery company, price and data point is invented. Simulated results say nothing about real markets.
IPOs you can actually get into. When a listing opens its book, indicate for shares from the offer page — allocation odds shown up front, nothing charged until you’re filled, and your allocation prints on the first trading day.
Your company can invest too. Founded companies at Series B (or a $10M valuation) can open an investment division: trade the market from the corporate treasury, and acquire other companies outright — every confirm shows the company’s cash, not yours.
Alerts you can manage. Mute, re-arm, dismiss, and delete alerts right from the list. Triggered alerts can finally be acknowledged instead of staring at you forever.
Settings on the big screen. Appearance, sound, accessibility, and save export/import now live on the Help page on desktop — including full save backup and restore.