This horizontal bar chart shows total global video game sales by genre for releases from 1980 to 2015, with bar length representing sales in millions of copies. The visualization uses D3 v7 to load the CSV data, group records by genre, and aggregate sales with `d3.group` and `d3.sum`. Rendered as SVG with animation, hovering over a bar displays a fixed-position tooltip showing the genre and its exact sales figure.