This choropleth map visualizes the global distribution of esports participation using a spherical orthographic projection, with country counts represented by dark blue circles overlaid on a grey base map. The visualization is built with D3 v5, using `d3.geoOrthographic` for the projection, `d3.geoPath` for rendering country boundaries, and `d3.geoCentroid` to position circles at country centers. It loads population data from a CSV and world geometry from a TopoJSON file, with a color legend showing the circle radius scale. Zooming is supported via D3's zoom utility, and circle sizes are scaled by the square root of the 2018 user counts.