Screens off.

How it works

1. Every day there are five questions about the crypto market, the same five for everyone.
2. Each one is on screen for eight seconds. Drag the slider to your answer; it is locked when you press the button or when the time runs out. If you never touch the slider, that question scores 0.
3. After each answer you see the true value and your points, 0 to 100. The day's score is the average of the five.
4. You get a line and an image to post, and a streak that lives in this browser.

A new five comes out every day at 00:05 UTC. There is no archive and no replay.

What this is not

It is a memory check you run on yourself. A second tab with a chart open defeats it, and so does a second browser, where you would get the same five questions again. The only thing in the way is the eight-second clock, and that clock runs in your own browser. Nothing is at stake: there are no prizes, no leaderboard and no accounts, and a score proves nothing to anyone but you.

The rules, exactly

Scoring

points = 100 × (1 − your error ÷ the zero line), rounded, never below 0

Your error is the distance between your slider and the true value. The zero line is fixed per question (the table below): an error that large, or larger, scores 0; no error scores 100; a straight line in between. No answer scores 0. The day's score is the average of the five, rounded. Marks: green for 75 or more, yellow for 40 to 74, dark for less.

The pool of twelve questions

The slider's range is fixed for each question and is the same every day. It is never moved towards the answer.

"Points" in the zero line means percentage points. "The top twenty" are the twenty perpetuals with the most traded volume over the 24 hours before the snapshot; the list is worked out again every day.

The draw

Once a day the server puts the twelve in an order drawn from the date and a secret it keeps. The first five in that order are the day's questions, with at most two from the same family (prices; moves; funding and open interest; the top twenty). A question is skipped for the day if its source does not answer or if its true value falls outside its slider.

Where the answers are

On the server. The page receives the questions without their values; it sends your answer, and only then gets the true value and your points back. The server scores every answer itself.

Sources and the snapshot

The values are a snapshot the server takes once a day, on the first visit after 00:05 UTC. Everyone is scored against that one snapshot.

Prices, moves, funding, open interest, the top twenty: the public data of the exchange Hyperliquid. These are the prices of its perpetual contracts, not spot prices, so they can differ a little from the price you have in your head. Values tied to 00:00 UTC (candles and funding) are exact for that moment whenever the server reads them. Open interest and the top twenty have no history to read back, so they are as of the snapshot, and each such question states the time. Screens Off is not affiliated with Hyperliquid.

Fear & Greed: the Crypto Fear & Greed Index, data from alternative.me. The source is named next to the number wherever it is shown. Screens Off is not affiliated with alternative.me.

Finished checks are counted in public at /api/count. The count is a floor: two checks finishing in the same instant can be counted as one.

The token: Screens Off ($SCREENSOFF)