This area chart visualizes global video game sales aggregated by year, showing the total sales trend over time. The visualization uses an SVG rendering with a steelblue filled area path, created using D3.js v7. The code loads CSV data from a GitHub repository, filters out entries with missing years, and uses `d3.rollup` to sum sales per year. Axes are generated with `d3.axisBottom` and `d3.axisLeft`, with linear scales for both year and sales values.