Mystery Chart

An anonymous historical price walks forward. Trade with play money. Beat buy-and-hold — then see what it really was.

Play money, not financial advice
Personal bests stay on this device only.

About & Credits

Mystery Chart is a free browser game. No ads, no in-app purchases, no tracking, and no network calls while you play.

Play money, not financial advice. Not a real market.

How to play

You see a rebased chart with no name and no dates. It walks forward candle by candle. Buy goes all-in long, Sell returns to cash, Hold does nothing. Long-only. Pause and 1× / 2× control the pace.

Scoring

Your ending play equity is compared with buy-and-hold from the first visible close to the last, starting from the same $10,000.

Chart note

These government series are daily (or weekly) closes, not true OHLC bars. Candles are synthetic: open equals the prior close; high and low are the max and min of open and close. No intraday highs or lows are invented.

Data sources

Pass 1 packs only cleared U.S. government series downloaded from the original agency. No agency logos are used.

    Privacy

    Personal bests are stored in this browser’s localStorage only.

    Mystery Chart

    Anonymous series · rebased to 100
    Equity
    $10,000
    Cash
    $10,000
    Position
    Hold · cash
    Synthetic candles from closes · tradable start = 100

    Play money, not financial advice

    Reveal

    Play money, not financial advice
    Your ending equity
    $10,000
    Buy-and-hold
    $10,000
    Vs buy-and-hold
    $0 · 0%
    Personal note
    Saved on this device
    Labeled window