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How the crowd draws

292 drawings of its land border and 688 drawings of its coast, from memory on Borderline’s World map, 17 September 2026 to 27 October 2026.

Draw Sierra Leone

In numbers

Last updated on 27 October 2026
The real oneThe crowd’s
Area72,000 km²28,000 sq mi70,000 km²27,000 sq mi2.6% smaller
Outline1,820 km1,131 mi1,654 km1,028 mi9.1% shorter
Centre11.79° W, 8.56° N11.8° W, 8.6° N11.80° W, 8.63° N11.8° W, 8.6° N7 km north4 mi north
Westernmost13.30° W, 9.04° N13.3° W, 9.0° N13.37° W, 9.13° N13.4° W, 9.1° N7 km beyond5 mi beyond
Easternmost10.28° W, 8.48° N10.3° W, 8.5° N10.32° W, 8.46° N10.3° W, 8.5° N4 km short2 mi short
Southernmost11.47° W, 6.92° N11.5° W, 6.9° N11.47° W, 6.92° N11.5° W, 6.9° Nthe same
Northernmost11.50° W, 10.00° N11.5° W, 10.0° N11.83° W, 10.02° N11.8° W, 10.0° N2 km beyond1 mi beyond

Near the land border, 48% of the crowd’s lines run inside Sierra Leone. Near the coast, 67% 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 CIA World Factbook, 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.

Sierra Leone and Guinea: 572 km in the game, 794 km officially.

Sierra Leone’s coast: 979 km in the game, 402 km officially.

2 neighbours
Border withIn the gameThe crowd’s
Guinea572 km in the game794 km officially580 km the crowd’s1.4% longer
Liberia234 km in the game299 km officially218 km the crowd’s6.8% shorter
The coast979 km in the game402 km officially787 km the crowd’s19.6% shorter

How it is measured

The crowd’s Sierra Leone: every few km along the real line, each drawing’s nearest point, inside Sierra Leone 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 980 drawings that scored 10 or more on Borderline’s World 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 Sierra Leone yourself and add your line to the next update.