Read the past. Draw the possibility.
Extraplot Unlimited: another five charts, whenever you like
Extraplot Unlimited keeps the chart-drawing challenge going after the daily set is finished. Every practice run brings together five charts from the original published season, each with a visible beginning and a hidden continuation. Draw the missing values, compare your shape with the real records and work towards a maximum of 5,000 points. There is no daily attempt limit, no account and no timer on an individual chart. The archive contains 1,825 charts across seven subjects, so a new set can move from a population trend to baby names, technology or a sudden burst of public attention. Practice is a separate run from the daily game, and you can request another set whenever you are ready.
How to play Extraplot Unlimited
- Start with the practice set loaded above. Five different dates are sampled from the published schedule and one chart is chosen from each. The selection is arranged using the original ease ratings so the more approachable charts tend to appear first.
- Inspect the title, units, scale and last visible year. Drag or tap in the shaded section to estimate the hidden years. Connected pointer movements fill the years between them; redraw a stretch if you change your mind, or use Undo to remove a stroke.
- Fill all the missing years and reveal the true continuation. Read your score, compare the flat and trend baselines, and open the exact-value table when a surprising change deserves a closer look. Each reveal retains the original source link and licence label.
- Finish all five charts to see the total and copy a spoiler-free result. Choose New set for another selection. Requesting a new set replaces the current practice run, while the daily run saved in this browser remains available on its own page.
A practice mode with the same real-data rules
A large season, sampled in small sets
Unlimited uses the original season archive rather than generating artificial time series. The collection covers world statistics, names, search interest, culture, technology, nature and money. Sampling from five different scheduled dates keeps a practice set from simply repeating one existing day. Selection is random, so repeats across different practice runs are possible. The mode does not promise that every chart is unseen or that difficulty rises perfectly. The source ease rating helps order the selection, but a familiar subject can still be harder to draw than an unfamiliar one.
The daily scoring curve, without the wait
Every hidden year contributes equally to your average absolute error. That error is measured against the chart’s vertical range, allowing charts with very different units to use the same 0–1,000 scale. A miss of 1% or less receives full points, while 31% or more receives zero. Between those values the score changes linearly. The whole shape matters, so a careful rise followed by a decline can beat a line that lands on the right final value after missing every earlier turn.
A reveal that gives you more than a number
Once you submit, the actual line appears beside your drawing. The accompanying explanation describes the hidden period, and the original source identifies where the measurements came from. The flat baseline holds the last historical value, while the trend baseline projects a fit to up to ten recent visible points. Compare these with your score to see whether your more detailed guess added value. Open the table to inspect individual years rather than judging the result solely from the visual overlap of two lines.
What to practise in Extraplot Unlimited
Learn when trends stop being useful
A recent slope is a starting point, not a guarantee. Repeated practice makes it easier to notice when you automatically continue a rise even though the subject could have reached a plateau. After each reveal, compare that instinct with the trend baseline. Over several charts, consider which subjects invited overconfidence and which ones made you expect a turning point that never happened.
Build comfort with unfamiliar scales
A percentage, an absolute count and a revenue figure ask different questions. Read the units before sketching, and check whether the visible vertical range begins at zero. A small numerical change can occupy most of the chart when the scale is narrow. Unlimited gives you repeated opportunities to slow down at that first reading step, without waiting for tomorrow’s daily puzzle.
Turn a reveal into a conversation
Play a practice set together and ask each person to describe the curve they expect before drawing it. When the data appears, discuss which part of the subject’s history helps explain the difference. Use the source to investigate a surprising value. The game can prompt a useful discussion about data interpretation, although a score alone is not a measure of someone’s knowledge or forecasting ability.
A real example from the Extraplot archive
One chart in the original archive hides Netflix’s growth after 2012. The series reaches $20.2 billion in 2019, $29.7 billion in 2021 and $39 billion in 2024. Holding the 2012 value flat misses most of that change. A rising line is more plausible, but the intermediate years still affect the score. This is an example from the collection; a random practice set is not guaranteed to include it. The dataset entry credits Netflix’s annual reports.
Frequently asked questions
Is Extraplot Unlimited free?
Yes. You can load repeated five-chart practice sets without payment or an account. The game uses locally served copies of the original public chart files, so the active run does not depend on a live request to the original site.
Will Unlimited spoil upcoming daily charts?
It can. Practice samples from the entire published season, including charts assigned to future daily dates. If preserving the surprise of each daily set matters to you, stay with the daily page and use the answer page only for a date you have already played.
Does practice change my saved daily score?
No. Unlimited has its own in-memory run. Your daily progress uses a separate browser storage entry for its date. Moving to practice does not submit drawings to the daily run or replace the daily score.
Can a chart appear more than once?
Yes, across different practice sets. Each set selects five different schedule dates and one chart from each, but there is no lifetime exclusion list. A new random set does not mean every selected chart will be unfamiliar.
Will a practice set survive a page refresh?
Practice is kept in the current page session and a refresh loads a new selection. Finish or copy a result before leaving if you want to keep it. Daily mode saves its progress separately when browser storage is available.
Find your next little challenge
For a shared challenge with a fixed daily order, open the daily Extraplot game. After playing, the Extraplot answer desk lets you revisit the actual values for a selected date.
Data and implementation notes
This independent A2A version uses a local snapshot of the season published by Extraplot. The original chart files supply the measured values, cut-off years, axis limits, explanations, schedule and source attribution. Each revealed entry retains its own dataset licence label; the collection does not have one uniform data licence. This version uses its own interface and browser storage. Daily progress belongs to this browser and does not sync with the original site or another device. If you clear browser storage, that saved progress is removed. The season is finite: outside its published dates, the last available dated set remains playable.