...Source chapters are maintained as Markdown and accompanied by code examples, illustrations, styles, and generated HTML. Topics include game loops, component architectures, event queues, object pools, spatial partitioning, data locality, and other performance-oriented designs. A Python formatting script transforms the book sources and templates into the published web edition. Watch mode can automatically rebuild pages as source files change. Although active development has largely stopped since the book was completed, the repository remains a valuable educational reference and source archive.