Fazen2d is a C++ library for creating 2D graphics and handling input in the Windows console. It provides geometric primitives (points, lines, boxes, circles, text), a rendering system with double buffering to prevent flicker, input handlers for keyboard and mouse, and utility classes for timing and color management. The architecture is modular, with clear separation between rendering, geometry, input, and state management. The main entry point is in main.cpp, which demonstrates a simple animation loop. The library relies solely on the Windows API and C++ standard library.