Extraplot Game

What is Extraplot?

Extraplot is the GuessDash game where you predict the rest of a chart. Each round presents an observed series followed by a period you fill in yourself. Draw one line across the missing years and select Reveal to compare your forecast with the recorded values. Select Next chart to continue the daily set.^[1]

You may have seen it described as the GuessDash draw-the-line game, the chart guessing game, or Trendraw. GuessDash is the collection that hosts it. The publisher’s older Trendraw route now opens Extraplot, so it leads to the same game.^[1][3]

How to draw the hidden part of the chart

Read the chart title and the labels on both axes. Draw across the missing years with a mouse or touch and fill the full forecast span before selecting Reveal. You can redraw your estimate while it is still hidden. The game overlays the real values after you submit.^[1]

The chart also offers keyboard controls. Use Left or Right to move between years and Up or Down to adjust the value. Hold Shift to adjust in larger steps or use Home and End to jump to the ends of the forecast range.^[1]

Before touching the graph, say what one tick actually represents. A movement of 10 could mean percentage points, millions of people, or another unit. The y-axis also may start above zero. A line can look steep even when the change is modest in the chart’s units.

How the Extraplot score works

Extraplot awards up to 1,000 points. The current game compares each of your hidden-year values with the corresponding recorded value and averages the size of those misses relative to the chart’s vertical range. A point that is too high in one year does not cancel a point that is too low in another.^[1]

Pay attention to the whole forecast, including changes in direction. For a made-up example, suppose the visible series goes from 40 to 44 to 49. A straight continuation assumes roughly the same annual increase. If the metric is a share that is already near its ceiling, a slower climb can be a better hypothesis. Check the unit and plausible bounds before extending the visible slope.

Three checks before you reveal

Look for a stable pattern across several years. A sudden final jump could be the start of a new trend, or a single spike. If the rest of the series is steady, one useful starting guess is to let the line return partway toward its earlier level.

Consider the metric before adding a bend. A percentage has a natural ceiling, while a head count usually does not. When the topic gives you no reason to draw a sharp turn, use a simple line and look at the revealed data afterward to see what you missed.

Compare the general level, the direction and the turning points separately. That tells you whether the problem was a mistaken starting value or a mistaken view of what changed.

Daily reset, free access and past charts

GuessDash publishes a new daily set at midnight in Amsterdam. That is Central European Time in winter and Central European Summer Time in summer. Use the publisher’s countdown to check when you and your friends can start the next set.^[2]

Today’s puzzle is free to play as a guest. A free account enables cross-device scores and replays. After a round, use Replay on the result card to open the calendar of earlier charts.^[2]

GuessDash is run by an independent creator in the Netherlands. The site builds its puzzles from published records, with a mix of sources depending on the subject. Use the original game for its current puzzle and source information.^[4][2]