How to Play
Six steps. Zero real money. Infinite ways to lose.
Pick your starting capital
Choose how much fake money you want to risk. $10K for the cautious. $1B for the delusional. It all feels the same when the market tanks.
Choose a scenario
Six historical periods. Each one a different flavor of chaos — or euphoria. The 2008 Financial Crisis, the dot-com wipeout, Black Monday 1987, COVID crash, 2021 crypto mania, and the 2022 crypto winter.
Build your portfolio
Search from 22 real instruments: stocks, ETFs, crypto, gold, bonds. Set your allocation percentages. They sum to 100% — MoneyBags will remind you if you try to cheat.
Set trading rules (optional)
Automate your strategy. Rules trigger based on price changes, portfolio value, position weights, and more. Example: "If SPY drops 5% in a day, sell 20% of my AAPL." Rules fire automatically during playback.
Run the simulation
Watch the market play out tick by tick. Hit play, set your speed (1x, 5x, 10x), and make manual trades whenever you panic. The simulation ends when the historical period is over.
See how badly you did
The results screen shows your final portfolio value, Sharpe ratio, max drawdown, beta, volatility, and your best and worst day. Then it adds your run to the leaderboard so you can compare.
Example trading rules
Rules are optional but powerful. Here are a few to get you started.
IF
Portfolio drops more than 10% in a day
THEN
Move 50% of everything to cash
IF
BTC position weight exceeds 40%
THEN
Sell 20% of BTC
IF
SPY (market) gains more than 3% in a day
THEN
Buy $5,000 of QQQ
IF
Cash balance exceeds $50,000
THEN
Buy $10,000 of GLD
What the numbers mean
Sharpe Ratio
Risk-adjusted return. Above 1.0 is good. Above 2.0 means you probably got lucky. Negative means you should have put it all in a savings account.
Max Drawdown
The worst peak-to-trough decline your portfolio experienced. This is the number that would have made you sell everything at exactly the wrong time.
Annualized Volatility
How much your portfolio swung around day to day, scaled to a yearly number. Higher = wilder ride.
Beta vs S&P 500
How much your portfolio moved relative to the market. Beta of 1 = moves with the market. Beta of 2 = twice as dramatic. Beta of 0 = didn't care.
No sign-up. No real money. No excuses.