This interactive bubble chart visualizes the correlation between the sales, production cost, and release year of video games, with each circle representing a title. The horizontal axis maps the year of release, the vertical axis tracks total sales, and the circle’s radius encodes the game’s cost. A color scale distinguishes unique game titles, and hovering reveals a tooltip with precise sales and cost figures. The visualization is rendered using D3 v7 with SVG elements, leveraging `d3.scaleLinear` for axes and sizing, `d3.scaleOrdinal` for coloring, and event handlers for interactive tooltips. Data is loaded from a CSV file via `d3.csv`.