This interactive chart visualizes board game data from BoardGameGeek, showing the distribution of game domains across decades from 1950 to 2020. The clustered bar chart displays counts for ten domain categories per decade, with color-coded bars and an interactive legend for filtering. Built with React and D3, the visualization uses `scaleBand`, `scaleLinear`, and `scaleOrdinal` for positioning and coloring, while `d3.rollup` aggregates the semicolon-delimited CSV data. Hover interactions on legend items enable user filtering of specific domains.