Gosu is a 2D game development library for Ruby and C++. It’s available for macOS, Windows, Linux, and iOS. Gosu is focused, lightweight and has few dependencies (mostly SDL 2). It provides: a window and a main loop 2D graphics and text, powered by OpenGL or OpenGL ES sounds and music keyboard, mouse, and gamepad input Gosu is mostly used to teach or learn Ruby or in short game development competit