A scatter plot of video-game sales, Metacritic scores, and playtime uses D3 v7’s `d3.scaleLinear`, `d3.scaleOrdinal`, and `d3.scaleSqrt` to map copies sold and score to x/y positions, genre to Tableau-10 hue, and average playtime to circle area. Minecraft receives a distinct highlight color. Data loads from a CSV via `d3.csv`, with axes built by `d3.axisBottom` and `d3.axisLeft`. The SVG rendering is generated in `chart.js` within an `index.html` shell.