Pixel2D is an open-source 2D game engine written in C++, designed for retro-style games. It supports pixel art, sprites, and basic physics, ideal for platformers or arcade titles. Pixel2D targets Windows, macOS, Linux, and HTML5, with a lightweight design for performance. Without a visual editor, it suits C++ programmers, with documentation and a small community. Its MIT license ensures no royalties, making it perfect for indie developers creating 2D retro games. While 3D support is absent, Pixel2D’s simplicity appeals to hobbyists or game jam participants seeking a focused 2D framework.