macroquad is a Rust game engine and graphics library inspired by raylib, providing a simple, immediate-mode API for 2D and 3D rendering, audio, input handling, and UI. The codebase is structured as a monolithic core library with several subcrates (particles, tiled, profiler, physics-platformer, macroquad_macro) that add specialized functionality. The architecture centers on a single-threaded game loop orchestrated by the `#[macroquad::main]` proc macro, with drawing batched via an internal OpenGL abstraction (miniquad). Key data flows include texture and font loading, immediate-mode UI widget rendering, and an experimental scene/coroutine system for game logic. The library is cross-platform (Windows, Linux, macOS, Web, Android, iOS) and emphasizes minimal dependencies and ease of use. While the core is tightly coupled, several subcrates and subsystems are well-encapsulated and demonstrate high craftsmanship.