Pick a market and start a round

How a round works

1. Spend a chip to startEach round uses one chip. You can hold up to 10, and one refills every 15 minutes.
2. Read the first 40 candlesA real daily chart opens with 40 candles already on screen, so you have context before your first call.
3. Buy, sell or holdSet a size with the slider, then buy at the current close or sell shares you hold. Or do nothing and wait.
4. Reveal the next candleStep forward one candle at a time, or turn on auto-play. There are 60 candles to play.
5. See your resultAnything you still hold is sold at the final close. You see your return next to what simply holding the whole time would have made.

How your score works

Every player starts with $10,000 in virtual money. Buying spends cash at the current candle's closing price; selling turns shares back into cash. Your balance carries over from round to round, and signed-in players are ranked by balance on the leaderboard.

At the end of a round the game shows two numbers: your return, and the return from simply buying at the start and holding to the end. Beating that second number is the real test. It is harder than it sounds.

Where the charts come from

Stock charts use daily open, high, low, close and volume for about 100 US-listed companies from January 2020 onward, adjusted for stock splits. Crypto charts use daily candles from Binance for 13 major coins. Every round starts at a random point in that history, so you cannot memorize the outcome.

Read the full methodology

Questions about the game

More ways to play

• Today's chart puzzle: one chart, one call, same for everyone
• Chart Cases: famous real moves to study before you play
• Candlestick basics, if you want the theory first
• Position size calculator