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How the crowd draws

19 drawings of its land border and 30 drawings of its coast, from memory on Borderline’s France map, 25 September 2026 to 26 October 2026.

Draw Seine-Maritime

In numbers

Last updated on 27 October 2026
The real oneThe crowd’s
Area6,299 km²2,432 sq mi5,962 km²2,302 sq mi5.4% smaller
Outline480 km298 mi433 km269 mi9.9% shorter
Centre1.03° E, 49.65° N1.0° E, 49.7° N1.04° E, 49.66° N1.0° E, 49.7° N1 km east1 mi east
Westernmost0.07° E, 49.52° N0.1° E, 49.5° N0.12° E, 49.53° N0.1° E, 49.5° N4 km short2 mi short
Easternmost1.79° E, 49.50° N1.8° E, 49.5° N1.79° E, 49.69° N1.8° E, 49.7° Nthe same
Southernmost1.01° E, 49.25° N1.0° E, 49.3° N1.12° E, 49.30° N1.1° E, 49.3° N5 km short3 mi short
Northernmost1.43° E, 50.07° N1.4° E, 50.1° N1.37° E, 50.06° N1.4° E, 50.1° N1 km short1 mi short

Near the land border, 55% of the crowd’s lines run inside Seine-Maritime. Near the coast, 51% run inland.

Borders and coast

Why two lengths?

A line’s length depends on how closely it is drawn. The game’s lines are simplified: they keep a point every few kilometres and cut across small bends. The official lengths, from the Observatoire national de la mer et du littoral (coasts, 2015 to 2017), are measured on other lines. A border measured on a finer line, following every bend of its rivers and ridges, comes out longer.

Coasts differ most, and either way. Some official coastlines follow every inlet and island (Canada’s 202,080 km); others are smoothed on purpose, crossing bays and sounds (the United States’ 19,924 km), and can come out shorter than the game’s.

Players draw against the game’s line and are scored against it, so the crowd’s length is compared with the game’s, both measured the same way. Set against an official length measured another way, the comparison would say more about the two methods than about the crowd.

Seine-Maritime’s coast: 149 km in the game, 152 km officially.

3 neighbours
Border withIn the gameThe crowd’s
Eure208 km in the game185 km the crowd’s11.1% shorter
Oise81 km in the game59 km the crowd’s27.2% shorter
Somme55 km in the game53 km the crowd’s3.6% shorter
The coast149 km in the game152 km officially149 km the crowd’sthe same

How it is measured

The crowd’s Seine-Maritime: every few km along the real line, each drawing’s nearest point, inside Seine-Maritime or outside it; the median over a short stretch is where the crowd puts the line there, and the real outline moved by it is the crowd’s. Where the move folds a narrow inlet over itself, the loop is cut.

The 49 drawings that scored 10 or more on Borderline’s France map, scribbles left out, the real line the game’s own. Area true to scale; the outline copies the real line’s detail, so its length changes only where the shape moves or a loop is cut.

Draw Seine-Maritime yourself and add your line to the next update.