This area chart from the D3.js gallery visualizes global video game sales over time, showing totals aggregated per year from a CSV dataset. The SVG rendering uses `d3.scaleLinear` for both axes, with `d3.area` to create the filled region. Data is processed via `d3.rollup` to sum sales by year. The chart includes labeled axes, a legend, and a blue fill (`#3182bd`), with the code utilizing `d3.axisBottom` and `d3.axisLeft` for tick marks.