This visualization shows a tree diagram of cricket-playing nations, grouped by game format, with each participating country represented as a colored rectangular node. The hierarchy is built from CSV data using `d3.csv`, then transformed into a tree structure and rendered with `d3.tree` and `d3.hierarchy` in SVG. Links between parent and child nodes are drawn as paths, while sibling connections within each category use horizontal lines. Node colors are assigned via `d3.scaleOrdinal` with `d3.schemeCategory10`, and the title states the visualization’s focus on participation counts per format.